USSD Code Failures Troubleshooter<\/title>\n <style>\n \/* Container styling *\/\n .game-container {\n background: linear-gradient(to bottom right, #f8f9fa, #e9ecef);\n padding: 30px;\n border-radius: 15px;\n box-shadow: 0 10px 25px rgba(0,0,0,0.1);\n max-width: 700px;\n margin: 40px auto;\n font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n text-align: center;\n position: relative;\n overflow: hidden;\n border-top: 5px solid #ff6a00;\n }\n .game-container h2 {\n color: #ff6a00;\n font-size: 1.8rem;\n margin-bottom: 16px;\n text-shadow: 0 1px 2px rgba(0,0,0,0.05);\n }\n .game-container p {\n color: #495057;\n font-size: 1.1rem;\n margin-bottom: 24px;\n line-height: 1.5;\n }\n \n \/* Troubleshooter Score Display *\/\n .troubleshoot-counter {\n background: linear-gradient(45deg, #ff6a00, #ee0979);\n color: #fff;\n font-weight: bold;\n padding: 10px 20px;\n border-radius: 50px;\n display: inline-flex;\n align-items: center;\n margin-bottom: 24px;\n font-size: 1.2rem;\n box-shadow: 0 4px 12px rgba(255,106,0,0.2);\n transition: transform 0.3s ease, box-shadow 0.3s ease;\n }\n .troubleshoot-counter:hover {\n transform: translateY(-2px);\n box-shadow: 0 6px 16px rgba(255,106,0,0.3);\n }\n #badge {\n font-size: 1.6rem;\n margin-right: 10px;\n }\n \n \/* Progress Bar *\/\n .progress-container {\n background-color: #e9ecef;\n border-radius: 10px;\n height: 8px;\n width: 80%;\n margin: 0 auto 20px;\n overflow: hidden;\n }\n .progress-bar {\n height: 100%;\n width: 0;\n background: linear-gradient(to right, #ff6a00, #ee0979);\n transition: width 0.5s ease;\n border-radius: 10px;\n }\n \n \/* Slider styling *\/\n input[type=range] {\n -webkit-appearance: none;\n width: 80%;\n height: 10px;\n border-radius: 10px;\n background: #dee2e6;\n outline: none;\n margin: 24px 0;\n box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);\n }\n input[type=range]::-webkit-slider-thumb {\n -webkit-appearance: none;\n width: 28px;\n height: 28px;\n border-radius: 50%;\n background: #ff6a00;\n cursor: pointer;\n box-shadow: 0 0 10px rgba(255,106,0,0.4);\n transition: background 0.2s ease, transform 0.2s ease;\n }\n input[type=range]::-webkit-slider-thumb:hover {\n background: #ee0979;\n transform: scale(1.1);\n }\n input[type=range]::-moz-range-thumb {\n width: 28px;\n height: 28px;\n border-radius: 50%;\n background: #ff6a00;\n cursor: pointer;\n box-shadow: 0 0 10px rgba(255,106,0,0.4);\n transition: background 0.2s ease, transform 0.2s ease;\n }\n input[type=range]::-moz-range-thumb:hover {\n background: #ee0979;\n transform: scale(1.1);\n }\n \n \/* Icon container *\/\n .troubleshoot-container {\n margin: 20px 0;\n overflow: hidden;\n position: relative;\n height: 40px;\n }\n .troubleshoot-icon {\n font-size: 2.2rem;\n position: absolute;\n left: 0;\n transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n }\n \n \/* List styling for USSD failures *\/\n #fixesList {\n list-style: none;\n padding: 0;\n margin: 24px 0;\n }\n #fixesList .listItem {\n background: #fff;\n border-left: 5px solid #ff6a00;\n padding: 16px 20px;\n margin: 14px 0;\n border-radius: 8px;\n opacity: 0;\n transform: translateY(20px);\n transition: all 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n box-shadow: 0 4px 12px rgba(0,0,0,0.05);\n font-size: 1rem;\n color: #495057;\n text-align: left;\n line-height: 1.6;\n }\n .fix-header {\n display: flex;\n align-items: center;\n margin-bottom: 10px;\n }\n .fix-icon {\n font-size: 1.5rem;\n margin-right: 12px;\n }\n #fixesList .listItem strong {\n font-size: 1.2rem;\n color: #ff6a00;\n font-weight: 600;\n }\n #fixesList .listItem p {\n margin: 0;\n font-size: 1rem;\n color: #495057;\n }\n #fixesList .listItem.visible {\n opacity: 1;\n transform: translateY(0);\n }\n #fixesList .listItem:hover {\n border-left-color: #ee0979;\n box-shadow: 0 6px 16px rgba(0,0,0,0.1);\n transform: translateY(-2px);\n }\n \n \/* Completion Message *\/\n .completion-message {\n background: linear-gradient(to bottom right, #ff6a00, #ee0979);\n color: white;\n padding: 24px;\n border-radius: 10px;\n margin-top: 24px;\n display: none;\n animation: fadeIn 0.8s ease;\n }\n .completion-message h3 {\n font-size: 1.6rem;\n margin-bottom: 10px;\n }\n #resetButton {\n background: white;\n color: #ff6a00;\n border: none;\n padding: 10px 20px;\n border-radius: 50px;\n font-weight: bold;\n margin-top: 16px;\n cursor: pointer;\n transition: transform 0.3s ease, box-shadow 0.3s ease;\n }\n #resetButton:hover {\n transform: translateY(-2px);\n box-shadow: 0 4px 12px rgba(0,0,0,0.2);\n background: #f8f9fa;\n }\n \n \/* Fixed Bonus Message *\/\n #bonusMessage {\n position: fixed;\n top: 20px;\n left: 50%;\n transform: translateX(-50%);\n background: linear-gradient(45deg, #ff6a00, #ee0979);\n color: #fff;\n padding: 8px 20px;\n border-radius: 50px;\n font-weight: bold;\n font-size: 1.2rem;\n opacity: 0;\n z-index: 1000;\n transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n box-shadow: 0 4px 12px rgba(0,0,0,0.2);\n }\n #bonusMessage.show {\n opacity: 1;\n transform: translateX(-50%) translateY(10px);\n }\n \n @keyframes fadeIn {\n from { opacity: 0; transform: translateY(20px); }\n to { opacity: 1; transform: translateY(0); }\n }\n @keyframes pulse {\n 0% { transform: scale(1); }\n 50% { transform: scale(1.1); }\n 100% { transform: scale(1); }\n }\n \n @media (max-width: 768px) {\n .game-container {\n padding: 20px 15px;\n margin: 20px auto;\n }\n .game-container h2 {\n font-size: 1.5rem;\n }\n .troubleshoot-counter {\n padding: 8px 16px;\n font-size: 1rem;\n }\n #badge {\n font-size: 1.4rem;\n }\n #fixesList .listItem {\n padding: 12px 15px;\n }\n .fix-icon {\n font-size: 1.3rem;\n }\n }\n <\/style>\n<\/head>\n<body>\n \n<div id=\"ussdGame\" class=\"game-container\">\n<h2>Why USSD Code Failures Happen<\/h2>\n<p>USSD codes may fail due to device-level issues, carrier restrictions, or user errors. Slide to reveal each cause.<\/p>\n \n \n<div id=\"troubleshootCounter\" class=\"troubleshoot-counter\">\n <span id=\"badge\">\ud83d\udd0d<\/span>\n <span id=\"score\">Tech Score: 0<\/span>\n <\/div>\n \n \n<div class=\"progress-container\">\n<div id=\"progressBar\" class=\"progress-bar\"><\/div>\n <\/div>\n \n \n <input type=\"range\" id=\"revealSlider\" min=\"0\" step=\"1\" value=\"0\">\n \n \n<div id=\"icon-container\" class=\"troubleshoot-container\">\n<div id=\"icon\" class=\"troubleshoot-icon\">\ud83d\udd0d<\/div>\n <\/div>\n \n \n<ul id=\"fixesList\">\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Incorrect Code Format<\/strong>\n <\/div>\n<p>A missing * or # can invalidate the USSD command.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Software Conflicts\/Outdated Firmware<\/strong>\n <\/div>\n<p>Android updates (especially Android 12+) may restrict USSD functions for security.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Third-Party App Interference<\/strong>\n <\/div>\n<p>Call blockers, dialer replacements, or security apps can prevent USSD execution.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Dual SIM Conflicts<\/strong>\n <\/div>\n<p>When two SIMs are active, USSD requests may be misrouted.<\/p>\n <\/li>\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Blocked or Unsupported Codes<\/strong>\n <\/div>\n<p>Some carriers disable specific USSD commands due to policy or security reasons.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Network Coverage Problems<\/strong>\n <\/div>\n<p>Weak signals or outages can lead to USSD failures.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Regional Restrictions<\/strong>\n <\/div>\n<p>A code may work in one region but be unavailable in another.<\/p>\n <\/li>\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Wrong Code Entered<\/strong>\n <\/div>\n<p>Device-specific or carrier-dependent codes may not work if entered incorrectly.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Dialing Without Required SIM<\/strong>\n <\/div>\n<p>Some USSD commands only function when dialed from the primary or active SIM.<\/p>\n <\/li>\n <\/ul>\n \n \n<div id=\"completionMessage\" class=\"completion-message\">\n<h3>\ud83c\udf89 Troubleshooting Complete!<\/h3>\n<p>You now know the common causes of USSD code failures. Use this insight to address issues effectively.<\/p>\n <button id=\"resetButton\">Restart Troubleshooting<\/button>\n <\/div>\n <\/div>\n \n \n<div id=\"bonusMessage\" class=\"bonus-message\"><\/div>\n \n \n <script>\n (function(){\n const slider = document.getElementById('revealSlider');\n const listItems = document.querySelectorAll('#fixesList .listItem');\n const totalItems = listItems.length;\n const progressBar = document.getElementById('progressBar');\n const scoreDisplay = document.getElementById('score');\n const bonusMsg = document.getElementById('bonusMessage');\n const completionMessage = document.getElementById('completionMessage');\n const resetButton = document.getElementById('resetButton');\n const icon = document.getElementById('icon');\n \n slider.max = totalItems;\n slider.step = 1;\n \n function generateIncrements(n, total, minStart) {\n if (n <= 0) return [];\n if (n === 1) return [total];\n const firstIncrement = Math.max(minStart, Math.floor(Math.random() * (total \/ 3)) + Math.floor(total \/ 4));\n const remainingTotal = total - firstIncrement;\n const increments = [firstIncrement];\n if (n === 2) {\n increments.push(remainingTotal);\n return increments;\n }\n const remainingCount = n - 1;\n const cuts = [];\n while (cuts.length < remainingCount - 1) {\n const r = Math.floor(Math.random() * (remainingTotal - 1)) + 1;\n if (!cuts.includes(r)) cuts.push(r);\n }\n cuts.sort((a, b) => a - b);\n const remainingIncrements = [cuts[0]];\n for (let i = 1; i < cuts.length; i++) {\n remainingIncrements.push(cuts[i] - cuts[i - 1]);\n }\n remainingIncrements.push(remainingTotal - cuts[cuts.length - 1]);\n return increments.concat(remainingIncrements);\n }\n \n const randomIncrements = generateIncrements(totalItems, 100, 30);\n let techScore = 0;\n let maxSliderReached = 0;\n \n function updateSlider() {\n const sliderValue = parseInt(slider.value, 10);\n const progressPercent = (sliderValue \/ totalItems) * 100;\n progressBar.style.width = `${progressPercent}%`;\n \n listItems.forEach((item, index) => {\n if (index < sliderValue) {\n item.classList.add('visible');\n } else {\n item.classList.remove('visible');\n }\n });\n \n icon.style.transform = `translateX(${progressPercent}%)`;\n \n if (sliderValue > maxSliderReached) {\n let totalBonus = 0;\n for (let i = maxSliderReached; i < sliderValue; i++) {\n totalBonus += randomIncrements[i];\n }\n techScore += totalBonus;\n maxSliderReached = sliderValue;\n scoreDisplay.textContent = `Tech Score: ${techScore}`;\n bonusMsg.textContent = `+${totalBonus} points!`;\n bonusMsg.classList.add('show');\n setTimeout(() => {\n bonusMsg.classList.remove('show');\n }, 1500);\n const counterElement = document.getElementById('troubleshootCounter');\n counterElement.style.animation = 'pulse 0.5s ease';\n setTimeout(() => {\n counterElement.style.animation = '';\n }, 500);\n if (sliderValue === totalItems) {\n setTimeout(() => {\n completionMessage.style.display = 'block';\n }, 1000);\n }\n }\n }\n \n slider.addEventListener('input', updateSlider);\n slider.addEventListener('change', updateSlider);\n \n resetButton.addEventListener('click', () => {\n techScore = 0;\n maxSliderReached = 0;\n slider.value = 0;\n scoreDisplay.textContent = 'Tech Score: 0';\n progressBar.style.width = '0%';\n icon.style.transform = 'translateX(0%)';\n listItems.forEach(item => item.classList.remove('visible'));\n completionMessage.style.display = 'none';\n });\n })();\n <\/script>\n<\/body>\n<\/html>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common USSD Codes That Often Fail<\/strong><\/h2>\n\n\n\n<p>These USSD codes are commonly reported as <strong>not working<\/strong> due to various issues:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common USSD Codes That Often Fail and Their Fixes<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>USSD Code<\/strong><\/td><td><strong>Purpose<\/strong><\/td><td><strong>Common Issue<\/strong><\/td><td><strong>Fix<\/strong><\/td><\/tr><tr><td>*#06#<\/td><td>IMEI Check<\/td><td>No response or invalid code error<\/td><td>Restart device, ensure strong network signal, or try on another phone<\/td><\/tr><tr><td>*#*#<em>7780<\/em>#*#*\u00a0<\/td><td>Factory Reset<\/td><td>Code does nothing or is blocked<\/td><td>Use the phone\u2019s settings menu for reset: <strong>Settings > System > Reset > Factory Reset<\/strong><\/td><\/tr><tr><td>*#<em>34971539<\/em>#<\/td><td>Camera Information<\/td><td>No response or partially disabled<\/td><td>Try <strong>third-party camera diagnostic apps<\/strong> or check camera permissions<\/td><\/tr><tr><td>*#0*#<\/td><td>LCD Display Test<\/td><td>Code does not launch test mode<\/td><td>Check if manufacturer (Samsung, Xiaomi) disabled the function; use a display test app<\/td><\/tr><tr><td>*#*#<em>0588<\/em>#*#*<\/td><td>Proximity Sensor Test<\/td><td>No response or inaccurate readings<\/td><td>Calibrate proximity sensor via <strong>Settings > Accessibility > Sensor Calibration<\/strong><\/td><\/tr><tr><td>*#*#232338#*#*<\/td><td>Wi-Fi MAC Address<\/td><td>MAC address not displayed<\/td><td>Check <strong>Settings > About Phone > Status<\/strong> for MAC manually<\/td><\/tr><tr><td>*#*#<em>2664<\/em>#*#*<\/td><td>Touchscreen Test<\/td><td>No response or unrecognized command<\/td><td>Use <strong>Touchscreen Calibration Apps<\/strong> from Play Store<\/td><\/tr><tr><td><em>#<\/em>#232331#<em>#<\/em><\/td><td>Bluetooth Test<\/td><td>Test mode fails to start<\/td><td>Toggle Bluetooth off\/on, unpair and re-pair devices<\/td><\/tr><tr><td><em>\u00a0*#*#7262626<\/em>#*#*<\/td><td>Field Test Mode<\/td><td>Code not recognized<\/td><td>Check carrier settings or use third-party network monitoring apps<\/td><\/tr><tr><td>*#43# \/ #43#<\/td><td>Call Waiting Toggle<\/td><td>Network rejects request<\/td><td>Contact carrier for supported call settings method<\/td><\/tr><tr><td>*#31#<\/td><td>Hide Caller ID<\/td><td>Returns “connection error”<\/td><td>Try alternative format #31#phone-number<\/td><\/tr><tr><td>##002#<\/td><td>Disable All Call Forwarding<\/td><td>Call forwarding remains active<\/td><td>Check manual settings in <strong>Call Settings > Call Forwarding<\/strong><\/td><\/tr><tr><td>*#07#<\/td><td>SAR Level Information<\/td><td>Restricted by carrier<\/td><td>Look for SAR details in <strong>Settings > About Phone > Regulatory Labels<\/strong><\/td><\/tr><tr><td><em>3001#12345#<\/em><\/td><td>Field Mode (iOS)<\/td><td>Does not open on latest iOS versions<\/td><td>Use <strong>Settings > General > About > Network<\/strong> instead<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Typical Symptoms of USSD Failure<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code.webp\" alt=\"*#*#34971539#*#* USSD code\" class=\"wp-image-44474\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code.webp\" alt=\"*#*#7262626#*#* USSD code\" class=\"wp-image-44473\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code.webp\" alt=\"*#*#232338#*#* USSD code\" class=\"wp-image-44472\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code.webp\" alt=\"*#*#2664#*#* USSD code\" class=\"wp-image-44471\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code.webp\" alt=\"#*#*0588*#*# USSD code\" class=\"wp-image-44470\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code.webp\" alt=\"*#31# USSD code\" class=\"wp-image-44469\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code.webp\" alt=\"*#07# ussd code\" class=\"wp-image-44468\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code.webp\" alt=\"*#06# USSD code\" class=\"wp-image-44467\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>“Invalid MMI code” or “Connection problem” message.<\/li>\n\n\n\n<li>The command appears to be running but never returns a result.<\/li>\n\n\n\n<li>The network rejects the command with an “unknown request” error.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Preliminary Troubleshooting Steps<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code.webp\" alt=\"*#*#02# USSD code\" class=\"wp-image-44466\" style=\"width:223px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code.webp\" alt=\"##7780## USSD code\" class=\"wp-image-44465\" style=\"width:223px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<p>I’ve run into USSD issues plenty of times, especially when trying to check my balance or access hidden settings on my <strong>Samsung<\/strong> and can work for any Android either HUAWEI, Motorola, Google pixel or even the iconic Sony. The first thing I always do is start with the basics\u2014because more often than not, a simple fix can get things working again.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Check Network Coverage<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"1200\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel.webp\" alt=\"screenshot of wifi calling from the quick panel\" class=\"wp-image-42421\" style=\"width:111px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel.webp 800w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-200x300.webp 200w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-683x1024.webp 683w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-768x1152.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-150x225.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-300x450.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-696x1044.webp 696w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p>I once found myself struggling with USSD codes when I had only one bar of signal. Moving to an area with better reception solved the issue immediately. If you’re on Wi-Fi calling, try disabling it. On my M33, I do this by going to <strong>Settings > Connections > Wi-Fi Calling<\/strong> and turning it off before dialing the USSD code.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Restart Your Phone<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call.webp\" alt=\"power-menu-to-restart-power-off-or-emergency-call\" class=\"wp-image-40376\" style=\"width:255px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>This trick works more often than you\u2019d think. A simple restart can reset network connectivity. On my <strong>Samsung M33 5G<\/strong>, I just <strong>hold the power button<\/strong>, select <strong>Restart<\/strong>, and once the phone reboots, I try the USSD code again. This often fixes temporary glitches.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Verify Code Format<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"459\" height=\"1024\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-459x1024.webp\" alt=\"example of dialing a USSD code\" class=\"wp-image-44480\" style=\"width:237px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-696x1552.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code.webp 1080w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><figcaption class=\"wp-element-caption\"><strong><span style=\"text-decoration: underline;\"><em>example of dialing a USSD code<\/em><\/span><\/strong><\/figcaption><\/figure><\/div>\n\n\n<p>It might sound obvious, but I\u2019ve typed in USSD codes wrong plenty of times\u2014missing a single * or # can break the command. Always double-check the structure before hitting the call button.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Toggle Airplane Mode<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone.webp\" alt=\"screenshot of airplane mode stuck on the samsung phone\" class=\"wp-image-42797\" style=\"width:187px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>Once, I was stuck with a persistent <strong>“Connection problem or invalid MMI code”<\/strong> error. I fixed it by toggling Airplane Mode on and off. On my <strong>Samsung M33 5G<\/strong>, I swipe down from the top, tap <strong>Airplane Mode<\/strong>, wait for <strong>30 seconds<\/strong>, and then turn it off. This forces my phone to reconnect to the network.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5. Switch Between 2G, 3G, and 4G<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"2560\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-scaled.webp\" alt=\"choosing 5g, 5g, LTE 3g and 2g from network connection mode image\" class=\"wp-image-41254\" style=\"width:382px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-scaled.webp 1440w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-169x300.webp 169w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-576x1024.webp 576w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-768x1365.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-864x1536.webp 864w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-1152x2048.webp 1152w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-150x267.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-300x533.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-696x1237.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-1392x2475.webp 1392w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/figure><\/div>\n\n\n<p>This trick saved me when my USSD codes weren\u2019t working after switching SIM cards. Some codes don\u2019t function properly on VoLTE or 5G networks. On my <strong>Android<\/strong>, I went to <strong>Settings > Connections > Mobile Networks > Network Mode<\/strong> and switched to <strong>3G only<\/strong>, then tried the code again. It worked instantly.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>6. Disable Any Conflicting Services<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app.webp\" alt=\"screenshot of tap to connect for the turbo VPN app\" class=\"wp-image-42614\" style=\"width:183px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>I once installed a third-party dialer app that completely blocked my USSD codes. If you use call-blocking apps or VPNs, they might interfere. Try disabling them and then dialing the code. If you can still see the Key icon on your device that means you’re still connected to a VPN, here’s how you can <a href=\"https:\/\/fixing-pro.com\/fixed\/key-symbol-icon-android\/\" target=\"_blank\" rel=\"noreferrer noopener\">remove the key icon from the device<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/fixing-pro.com\/category\/fixed\/\" target=\"_blank\" rel=\"noreferrer noopener\">Here are More Pro Fixing Blogs<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Deeper Device-Level Fixes<\/strong><\/h3>\n\n\n\n<p>If the basics don\u2019t work, I move on to more advanced troubleshooting. These have worked for me when USSD codes refused to run.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Update Phone Software<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"853\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update.webp\" alt=\"phone updates\" class=\"wp-image-13208\" style=\"width:326px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update.webp 640w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-225x300.webp 225w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-150x200.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-300x400.webp 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p>Some USSD codes stopped working for me after I updated to <strong>Android 13<\/strong>. But a few months later, Samsung rolled out another update, and everything started working again. If you\u2019re having issues, check for updates under <strong>Settings > Software Update > Download and Install<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Reset Network Settings<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1928\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-scaled.webp\" alt=\"image of samsungphone with reset network and bluetooth settings confirmations\" class=\"wp-image-43310\" style=\"width:688px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-300x226.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1024x771.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-768x578.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1536x1157.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-2048x1542.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-80x60.webp 80w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-160x120.webp 160w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-150x113.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-696x524.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1392x1048.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>When nothing else worked, resetting my network settings finally fixed my <strong>USSD errors<\/strong>. On <strong>Android<\/strong>, go to:<br><strong>Settings > General Management > Reset > Reset Network Settings<\/strong><strong><br><\/strong> This clears saved Wi-Fi networks, Bluetooth devices, and cellular settings\u2014so make sure you reconnect everything afterward.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Clear Phone Dialer App Cache (Android)<\/strong><\/h4>\n\n\n\n<p>Corrupt cache files can mess up USSD codes. I fixed this on my M33 by going to:<br><strong>Settings > Apps > Phone > Storage > Clear Cache.<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1441\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-scaled.webp\" alt=\"image of dialing the 4636 USSD Code on android google dialer\" class=\"wp-image-42168\" style=\"width:518px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-300x169.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1024x576.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-768x432.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1536x864.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-2048x1153.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-150x84.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-696x392.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1392x783.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>If clearing the cache doesn\u2019t help, try <strong>Clear Data<\/strong>, but be aware this resets the app completely.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Check SIM Card Issues<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1441\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-scaled.webp\" alt=\"image of sim card tray with sd card and sim inside\" class=\"wp-image-41339\" style=\"width:592px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-300x169.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1024x576.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-768x432.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1536x864.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-2048x1153.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-150x84.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-696x392.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1392x783.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>Once, my secondary SIM was interfering with USSD codes. I disabled <strong>SIM 2<\/strong> from <strong>Settings > Connections > SIM Manager<\/strong> and retried the code. It worked immediately. If you\u2019re facing similar issues, try removing one SIM card or testing the SIM in another device.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Carrier-Level Solutions<\/strong><\/h3>\n\n\n\n<p>If the fixes above don\u2019t work, the issue might be with your carrier. Here\u2019s how I approach it:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Contact Customer Support<\/strong><\/h4>\n\n\n\n<p>I once struggled with a USSD code for call forwarding. After multiple failed attempts, I called my carrier, and they told me the service wasn\u2019t available on my plan. If your code isn\u2019t working, ask your carrier if it\u2019s still supported.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Change Your Plan or Carrier Settings<\/strong><\/h4>\n\n\n\n<p>Some USSD codes only work on <strong>postpaid<\/strong> or <strong>premium plans<\/strong>. I realized my prepaid plan didn\u2019t support certain codes, so I had to switch to a different plan.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Use Carrier-Specific Alternatives<\/strong><\/h4>\n\n\n\n<p>I once had trouble checking my balance using <strong>*123#<\/strong>, only to learn my carrier had changed it to <strong>#123#<\/strong>. Check your carrier\u2019s website or app for the latest codes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"350\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/06\/Before-you-go-gif.gif\" alt=\"before you go gif\" class=\"wp-image-18574\" style=\"width:296px;height:auto\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Preventive Measures & Best Practices<\/strong><\/h3>\n\n\n\n<p>After fixing USSD issues multiple times, here\u2019s what I do to <strong>prevent<\/strong> them from happening again:<\/p>\n\n\n\n<p>\u2714 <strong>Keep Your Phone Updated<\/strong> \u2013 Bug fixes often restore broken USSD functionality.<br>\u2714 <strong>Document Working USSD Codes<\/strong> \u2013 I keep a list of working codes for my carrier.<br>\u2714 <strong>Avoid Third-Party Apps That Interfere<\/strong> \u2013 Uninstalling unnecessary dialer or call-blocking apps helped me.<br>\u2714 <strong>Stay Updated on Carrier Changes<\/strong> \u2013 Carriers sometimes modify or discontinue USSD services, so I check their support page occasionally.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Understanding USSD Codes and How They Work<\/strong><\/h2>\n\n\n\n<p>USSD (<strong>Unstructured Supplementary Service Data<\/strong>) codes\u2014often called <strong>MMI (Man-Machine Interface) codes<\/strong>\u2014are sequences starting with * or #. Unlike SMS, USSD runs on <strong>GSM signaling channels<\/strong>, meaning it doesn\u2019t require an internet connection and responds <strong>instantly<\/strong>.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Dialing a Code<\/strong> \u2192 The phone sends a request to the network.<\/li>\n\n\n\n<li><strong>Carrier Processing<\/strong> \u2192 The carrier deciphers the request and prepares a response.<\/li>\n\n\n\n<li><strong>Instant Feedback<\/strong> \u2192 The result pops up on your screen in real-time.<\/li>\n<\/ol>\n\n\n\n<p>This process is why USSD is <strong>fast and reliable<\/strong>\u2014until it <strong>stops working<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>How USSD Codes Function<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When you dial a USSD code, your phone <strong>sends a request<\/strong> through <strong>GSM signaling channels<\/strong> to your carrier.<\/li>\n\n\n\n<li>The network <strong>processes the request<\/strong> and sends back an <strong>instant response<\/strong>, usually displayed as a pop-up or notification.<\/li>\n\n\n\n<li>This <strong>two-way communication<\/strong> happens in real-time, meaning the session stays open until the network provides a response.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Common Uses of USSD Codes<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Checking account balance:<\/strong> *123#, #BAL#<\/li>\n\n\n\n<li><strong>Enabling\/disabling call forwarding:<\/strong> *21#, #21#<\/li>\n\n\n\n<li><strong>Retrieving IMEI number:<\/strong> *#06#<\/li>\n\n\n\n<li><strong>Testing network and hardware components:<\/strong> *#*#4636#*#* (excluded from this article as I\u2019ve covered it before) <\/li>\n<\/ul>\n\n\n\n<div class=\"fixing-pro-faq\">\n <style>\n \/* Import Google Fonts *\/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700&display=swap');\n\n \/* Define CSS variables for this component *\/\n .fixing-pro-faq {\n --primary-gradient: linear-gradient(90deg, #ff3131 0%, #ff8f56 100%);\n --text-color: #333;\n --white: #fff;\n --light-gray: #f5f5f5;\n --border-radius: 8px;\n --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);\n }\n \n \/* Global resets and typography *\/\n .fixing-pro-faq * {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n }\n \n \/* Container styling *\/\n .fixing-pro-faq .container {\n max-width: 1000px;\n margin: 50px auto;\n padding: 0 20px;\n background-color: var(--light-gray);\n color: var(--text-color);\n line-height: 1.6;\n }\n \n .fixing-pro-faq .faq-header {\n text-align: center;\n margin-bottom: 40px;\n }\n \n .fixing-pro-faq .faq-header h2 {\n font-size: 2.8rem;\n margin-bottom: 15px;\n background: var(--primary-gradient);\n -webkit-background-clip: text;\n background-clip: text;\n color: transparent;\n display: inline-block;\n letter-spacing: 1px;\n }\n \n .fixing-pro-faq .accordion-container {\n margin-bottom: 40px;\n }\n \n .fixing-pro-faq .accordion-item {\n background-color: var(--white);\n border-radius: var(--border-radius);\n box-shadow: var(--box-shadow);\n margin-bottom: 20px;\n overflow: hidden;\n }\n \n .fixing-pro-faq .accordion-header {\n padding: 20px;\n cursor: pointer;\n display: flex;\n justify-content: space-between;\n align-items: center;\n font-weight: 500;\n font-size: 1.2rem;\n transition: background-color 0.3s ease;\n }\n \n .fixing-pro-faq .accordion-header:hover {\n background-color: rgba(255, 49, 49, 0.05);\n }\n \n .fixing-pro-faq .accordion-header::after {\n content: '+';\n font-size: 1.5rem;\n color: #ff3131;\n transition: transform 0.3s ease;\n }\n \n .fixing-pro-faq .accordion-item.active .accordion-header::after {\n content: '\u2212';\n transform: rotate(180deg);\n }\n \n .fixing-pro-faq .accordion-content {\n max-height: 0;\n overflow: hidden;\n transition: max-height 0.3s ease;\n padding: 0 20px;\n }\n \n .fixing-pro-faq .accordion-item.active .accordion-content {\n max-height: 1000px;\n padding: 0 20px 20px;\n }\n \n .fixing-pro-faq .accordion-content p {\n margin-bottom: 15px;\n font-size: 1rem;\n font-weight: 300;\n }\n \n .fixing-pro-faq .accordion-content a {\n color: #ff3131;\n text-decoration: none;\n font-weight: 500;\n }\n \n .fixing-pro-faq .accordion-content a:hover {\n text-decoration: underline;\n }\n \n .fixing-pro-faq .accordion-content ul {\n margin-left: 20px;\n margin-bottom: 15px;\n }\n \n .fixing-pro-faq .accordion-content li {\n margin-bottom: 8px;\n }\n \n @media (max-width: 768px) {\n .fixing-pro-faq .faq-header h2 {\n font-size: 2rem;\n }\n \n .fixing-pro-faq .accordion-header {\n font-size: 1rem;\n padding: 15px;\n }\n }\n <\/style>\n \n<div class=\"container\">\n<div class=\"faq-header\">\n<h2><strong>USSD Code Issues<\/strong><\/h2>\n <\/div>\n \n<div class=\"accordion-container\">\n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Why is my USSD code not working?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n USSD codes may fail due to network instability, incorrect code formatting, carrier restrictions, or software conflicts on your device. If you suspect advanced network features are disabled, you might need to check whether VoLTE or related options are enabled. For instance, if you\u2019re dealing with VoLTE not showing up, you can investigate further with this <a href=\"https:\/\/fixing-pro.com\/fixed\/troubleshoot-volte\/\" target=\"_blank\"><strong>VoLTE troubleshooting guide<\/strong><\/a>.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>How do I fix the “Connection problem or invalid MMI code” error?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n This error often appears when your phone cannot complete a USSD request due to poor signal, SIM conflicts, or temporary network issues. Try restarting your device or toggling Airplane Mode. If the problem persists, double-check your carrier\u2019s coverage in your area.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Do all USSD codes work on every phone?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Not necessarily. Some USSD codes are exclusive to specific manufacturers (such as Samsung or Xiaomi) or carriers. If a code fails, confirm that it\u2019s compatible with your device. Also, ensure your operating system hasn\u2019t blocked or altered the code\u2019s functionality after a recent update.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Can using USSD codes harm my phone?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Most USSD codes are safe, but certain ones\u2014like those for factory resets\u2014can erase data. Always verify a code\u2019s purpose before dialing it. If you encounter severe software issues, such as a phone stuck in a boot loop, you might consider this <a href=\"https:\/\/fixing-pro.com\/fixed\/android-restart-loop-guide\/\" target=\"_blank\"><strong>Android restart-loop guide<\/strong><\/a> for a potential fix.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>How do I know if my carrier has blocked a USSD code?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Carriers may restrict certain USSD codes to prevent misuse. If a code that previously worked now fails, it might have been disabled or blocked. Verify this by checking your carrier\u2019s official website or contacting support. If verifications like OTP messages are also failing, consider consulting this <a href=\"https:\/\/fixing-pro.com\/fixed\/otp-not-receiving-fix\/\" target=\"_blank\"><strong>OTP-not-receiving fix<\/strong><\/a> for guidance.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Can I use USSD codes without an internet connection?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Yes. USSD codes operate over GSM channels and do not require an internet connection. However, if you rely on Wi-Fi calling, network conflicts might mimic a failed USSD session. If you suspect Wi-Fi calling is interfering, try switching it off or refer to this <a href=\"https:\/\/fixing-pro.com\/fixed\/wi-fi-calling-not-working\/\" target=\"_blank\"><strong>Wi-Fi calling not working<\/strong><\/a> guide.\n <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <script>\n (function() {\n const accordionHeaders = document.querySelectorAll('.fixing-pro-faq .accordion-header');\n \n accordionHeaders.forEach(header => {\n header.addEventListener('click', function() {\n \/\/ Toggle active class for the clicked item\n const accordionItem = this.parentElement;\n accordionItem.classList.toggle('active');\n \n \/\/ Close other items when one is opened\n document.querySelectorAll('.fixing-pro-faq .accordion-item').forEach(item => {\n if (item !== accordionItem) {\n item.classList.remove('active');\n }\n });\n });\n });\n })();\n <\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>USSD codes are <strong>powerful tools<\/strong>, but failures are common due to <strong>device settings, carrier policies, or incorrect formatting<\/strong>. By following this <strong>troubleshooting guide<\/strong>, you can <strong>identify, diagnose, and fix<\/strong> most USSD-related issues quickly. If all else fails, contacting your carrier for clarification or alternative methods is the best approach.<\/p>\n\n\n\n<p>I hope you found the information helpful. Here is our Contact Us page. If you still need any guidance, feel free to reach out to us\u2014it’s free.<\/p>\n\n\n\n<p>Got a question about a specific USSD code? Let me know in the comments!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I\u2019ve spent years relying on USSD codes to quickly check balances, tweak call settings, and retrieve phone details. These short numeric commands have saved me time\u2014until they stopped working, leaving me staring at an error message. If you\u2019ve ever dialed a code and received a \u201cConnection problem\u201d or \u201cInvalid MMI code\u201d response, you\u2019re not alone. […]<\/p>\n","protected":false},"author":1,"featured_media":44479,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281],"tags":[36,282],"class_list":{"0":"post-44460","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-fixed","8":"tag-android-how-to","9":"tag-pro-fix"},"yoast_head":"\n<title>Common USSD Code Failures (*#code#*) How to Fix Them<\/title>\n<meta name=\"description\" content=\"This is exactly the Common USSD Code Failures (*#code#*) How to Fix Them by the Fixing Pro . Step by step. guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Common USSD Code Failures (*#code#*) How to Fix Them\" \/>\n<meta property=\"og:description\" content=\"This is exactly the Common USSD Code Failures (*#code#*) How to Fix Them by the Fixing Pro . Step by step. guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\" \/>\n<meta property=\"og:site_name\" content=\"Fixing Pro\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/thekunalkashyap\" \/>\n<meta property=\"article:author\" content=\"https:\/\/facebook.com\/thekunalkashyap\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-13T11:05:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-13T11:05:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/thumbnail-of-Common-USSD-code-failures.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"2240\" \/>\n\t<meta property=\"og:image:height\" content=\"1260\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Kunal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/thekunalkashyap\" \/>\n<meta name=\"twitter:site\" content=\"@thekunalkashyap\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kunal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"14 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\"},\"author\":{\"name\":\"Kunal\",\"@id\":\"https:\/\/fixing-pro.com\/#\/schema\/person\/96fb619ba00c53e3a2e255179bea4dab\"},\"headline\":\"Common USSD Code Failures (*#code#*) How to Fix Them\",\"datePublished\":\"2025-03-13T11:05:21+00:00\",\"dateModified\":\"2025-03-13T11:05:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\"},\"wordCount\":2145,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fixing-pro.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/thumbnail-of-Common-USSD-code-failures.webp\",\"keywords\":[\"android how to\",\"pro fix\"],\"articleSection\":[\"Pro Fixes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\",\"url\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/\",\"name\":\"Common USSD Code Failures (*#code#*) How to Fix Them\",\"isPartOf\":{\"@id\":\"https:\/\/fixing-pro.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/thumbnail-of-Common-USSD-code-failures.webp\",\"datePublished\":\"2025-03-13T11:05:21+00:00\",\"dateModified\":\"2025-03-13T11:05:23+00:00\",\"description\":\"This is exactly the Common USSD Code Failures (*#code#*) How to Fix Them by the Fixing Pro . 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{"id":44460,"date":"2025-03-13T11:05:21","date_gmt":"2025-03-13T11:05:21","guid":{"rendered":"https:\/\/fixing-pro.com\/?p=44460"},"modified":"2025-03-13T11:05:23","modified_gmt":"2025-03-13T11:05:23","slug":"common-ussd-code-errors","status":"publish","type":"post","link":"https:\/\/fixing-pro.com\/fixed\/common-ussd-code-errors\/","title":{"rendered":"Common USSD Code Failures (*#code#*) How to Fix Them"},"content":{"rendered":"\n

I\u2019ve spent years relying on USSD codes<\/strong> to quickly check balances, tweak call settings, and retrieve phone details. These short numeric commands have saved me time\u2014until they stopped working, leaving me staring at an error message<\/strong>. If you\u2019ve ever dialed a code and received a \u201cConnection problem\u201d<\/strong> or \u201cInvalid MMI code\u201d<\/strong> response, you\u2019re not alone.<\/p>\n\n\n\n

The truth is, USSD failures<\/strong> are more than just random glitches. Whether it\u2019s a device setting<\/strong>, a carrier restriction<\/strong>, or even a recent software update<\/strong>, there\u2019s always a reason<\/strong>\u2014and more importantly, a fix<\/strong>. I\u2019ve researched, tested, and documented the most effective ways to get your USSD codes working again<\/strong>. I’m not going to talk about the *#*#4636#*#* not responding when dialed<\/a>.<\/p>\n\n\n\n

Quick Summary<\/strong><\/h2>\n\n\n\n
\n
USSD codes fail<\/strong> due to device settings, carrier restrictions, software issues, or incorrect formatting.<\/strong><\/li>\n\n\n\n
Basic fixes<\/strong> include checking network coverage, restarting your phone, and verifying code syntax.<\/li>\n\n\n\n
Advanced solutions<\/strong> involve resetting network settings, updating firmware, clearing cache, or disabling conflicting apps.<\/li>\n\n\n\n
Carrier-specific factors<\/strong> (regional variations, blocked codes) may require alternative shortcodes or customer support intervention.<\/li>\n\n\n\n
Preventive measures<\/strong> like keeping your software updated and documenting changes can minimize future issues.<\/li>\n<\/ul>\n\n\n\n
\n\n\n\n\n\n\n\n\nUSSD Code Failures Troubleshooter<\/title>\n <style>\n \/* Container styling \/\n .game-container {\n background: linear-gradient(to bottom right, #f8f9fa, #e9ecef);\n padding: 30px;\n border-radius: 15px;\n box-shadow: 0 10px 25px rgba(0,0,0,0.1);\n max-width: 700px;\n margin: 40px auto;\n font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n text-align: center;\n position: relative;\n overflow: hidden;\n border-top: 5px solid #ff6a00;\n }\n .game-container h2 {\n color: #ff6a00;\n font-size: 1.8rem;\n margin-bottom: 16px;\n text-shadow: 0 1px 2px rgba(0,0,0,0.05);\n }\n .game-container p {\n color: #495057;\n font-size: 1.1rem;\n margin-bottom: 24px;\n line-height: 1.5;\n }\n \n \/ Troubleshooter Score Display \/\n .troubleshoot-counter {\n background: linear-gradient(45deg, #ff6a00, #ee0979);\n color: #fff;\n font-weight: bold;\n padding: 10px 20px;\n border-radius: 50px;\n display: inline-flex;\n align-items: center;\n margin-bottom: 24px;\n font-size: 1.2rem;\n box-shadow: 0 4px 12px rgba(255,106,0,0.2);\n transition: transform 0.3s ease, box-shadow 0.3s ease;\n }\n .troubleshoot-counter:hover {\n transform: translateY(-2px);\n box-shadow: 0 6px 16px rgba(255,106,0,0.3);\n }\n #badge {\n font-size: 1.6rem;\n margin-right: 10px;\n }\n \n \/ Progress Bar \/\n .progress-container {\n background-color: #e9ecef;\n border-radius: 10px;\n height: 8px;\n width: 80%;\n margin: 0 auto 20px;\n overflow: hidden;\n }\n .progress-bar {\n height: 100%;\n width: 0;\n background: linear-gradient(to right, #ff6a00, #ee0979);\n transition: width 0.5s ease;\n border-radius: 10px;\n }\n \n \/ Slider styling \/\n input[type=range] {\n -webkit-appearance: none;\n width: 80%;\n height: 10px;\n border-radius: 10px;\n background: #dee2e6;\n outline: none;\n margin: 24px 0;\n box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);\n }\n input[type=range]::-webkit-slider-thumb {\n -webkit-appearance: none;\n width: 28px;\n height: 28px;\n border-radius: 50%;\n background: #ff6a00;\n cursor: pointer;\n box-shadow: 0 0 10px rgba(255,106,0,0.4);\n transition: background 0.2s ease, transform 0.2s ease;\n }\n input[type=range]::-webkit-slider-thumb:hover {\n background: #ee0979;\n transform: scale(1.1);\n }\n input[type=range]::-moz-range-thumb {\n width: 28px;\n height: 28px;\n border-radius: 50%;\n background: #ff6a00;\n cursor: pointer;\n box-shadow: 0 0 10px rgba(255,106,0,0.4);\n transition: background 0.2s ease, transform 0.2s ease;\n }\n input[type=range]::-moz-range-thumb:hover {\n background: #ee0979;\n transform: scale(1.1);\n }\n \n \/ Icon container \/\n .troubleshoot-container {\n margin: 20px 0;\n overflow: hidden;\n position: relative;\n height: 40px;\n }\n .troubleshoot-icon {\n font-size: 2.2rem;\n position: absolute;\n left: 0;\n transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n }\n \n \/ List styling for USSD failures \/\n #fixesList {\n list-style: none;\n padding: 0;\n margin: 24px 0;\n }\n #fixesList .listItem {\n background: #fff;\n border-left: 5px solid #ff6a00;\n padding: 16px 20px;\n margin: 14px 0;\n border-radius: 8px;\n opacity: 0;\n transform: translateY(20px);\n transition: all 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n box-shadow: 0 4px 12px rgba(0,0,0,0.05);\n font-size: 1rem;\n color: #495057;\n text-align: left;\n line-height: 1.6;\n }\n .fix-header {\n display: flex;\n align-items: center;\n margin-bottom: 10px;\n }\n .fix-icon {\n font-size: 1.5rem;\n margin-right: 12px;\n }\n #fixesList .listItem strong {\n font-size: 1.2rem;\n color: #ff6a00;\n font-weight: 600;\n }\n #fixesList .listItem p {\n margin: 0;\n font-size: 1rem;\n color: #495057;\n }\n #fixesList .listItem.visible {\n opacity: 1;\n transform: translateY(0);\n }\n #fixesList .listItem:hover {\n border-left-color: #ee0979;\n box-shadow: 0 6px 16px rgba(0,0,0,0.1);\n transform: translateY(-2px);\n }\n \n \/ Completion Message \/\n .completion-message {\n background: linear-gradient(to bottom right, #ff6a00, #ee0979);\n color: white;\n padding: 24px;\n border-radius: 10px;\n margin-top: 24px;\n display: none;\n animation: fadeIn 0.8s ease;\n }\n .completion-message h3 {\n font-size: 1.6rem;\n margin-bottom: 10px;\n }\n #resetButton {\n background: white;\n color: #ff6a00;\n border: none;\n padding: 10px 20px;\n border-radius: 50px;\n font-weight: bold;\n margin-top: 16px;\n cursor: pointer;\n transition: transform 0.3s ease, box-shadow 0.3s ease;\n }\n #resetButton:hover {\n transform: translateY(-2px);\n box-shadow: 0 4px 12px rgba(0,0,0,0.2);\n background: #f8f9fa;\n }\n \n \/ Fixed Bonus Message \/\n #bonusMessage {\n position: fixed;\n top: 20px;\n left: 50%;\n transform: translateX(-50%);\n background: linear-gradient(45deg, #ff6a00, #ee0979);\n color: #fff;\n padding: 8px 20px;\n border-radius: 50px;\n font-weight: bold;\n font-size: 1.2rem;\n opacity: 0;\n z-index: 1000;\n transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);\n box-shadow: 0 4px 12px rgba(0,0,0,0.2);\n }\n #bonusMessage.show {\n opacity: 1;\n transform: translateX(-50%) translateY(10px);\n }\n \n @keyframes fadeIn {\n from { opacity: 0; transform: translateY(20px); }\n to { opacity: 1; transform: translateY(0); }\n }\n @keyframes pulse {\n 0% { transform: scale(1); }\n 50% { transform: scale(1.1); }\n 100% { transform: scale(1); }\n }\n \n @media (max-width: 768px) {\n .game-container {\n padding: 20px 15px;\n margin: 20px auto;\n }\n .game-container h2 {\n font-size: 1.5rem;\n }\n .troubleshoot-counter {\n padding: 8px 16px;\n font-size: 1rem;\n }\n #badge {\n font-size: 1.4rem;\n }\n #fixesList .listItem {\n padding: 12px 15px;\n }\n .fix-icon {\n font-size: 1.3rem;\n }\n }\n <\/style>\n<\/head>\n<body>\n \n<div id=\"ussdGame\" class=\"game-container\">\n<h2>Why USSD Code Failures Happen<\/h2>\n<p>USSD codes may fail due to device-level issues, carrier restrictions, or user errors. Slide to reveal each cause.<\/p>\n \n \n<div id=\"troubleshootCounter\" class=\"troubleshoot-counter\">\n <span id=\"badge\">\ud83d\udd0d<\/span>\n <span id=\"score\">Tech Score: 0<\/span>\n <\/div>\n \n \n<div class=\"progress-container\">\n<div id=\"progressBar\" class=\"progress-bar\"><\/div>\n <\/div>\n \n \n <input type=\"range\" id=\"revealSlider\" min=\"0\" step=\"1\" value=\"0\">\n \n \n<div id=\"icon-container\" class=\"troubleshoot-container\">\n<div id=\"icon\" class=\"troubleshoot-icon\">\ud83d\udd0d<\/div>\n <\/div>\n \n \n<ul id=\"fixesList\">\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Incorrect Code Format<\/strong>\n <\/div>\n<p>A missing or # can invalidate the USSD command.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Software Conflicts\/Outdated Firmware<\/strong>\n <\/div>\n<p>Android updates (especially Android 12+) may restrict USSD functions for security.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Third-Party App Interference<\/strong>\n <\/div>\n<p>Call blockers, dialer replacements, or security apps can prevent USSD execution.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Dual SIM Conflicts<\/strong>\n <\/div>\n<p>When two SIMs are active, USSD requests may be misrouted.<\/p>\n <\/li>\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Blocked or Unsupported Codes<\/strong>\n <\/div>\n<p>Some carriers disable specific USSD commands due to policy or security reasons.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Network Coverage Problems<\/strong>\n <\/div>\n<p>Weak signals or outages can lead to USSD failures.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Regional Restrictions<\/strong>\n <\/div>\n<p>A code may work in one region but be unavailable in another.<\/p>\n <\/li>\n \n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Wrong Code Entered<\/strong>\n <\/div>\n<p>Device-specific or carrier-dependent codes may not work if entered incorrectly.<\/p>\n <\/li>\n<li class=\"listItem\">\n<div class=\"fix-header\">\n <span class=\"fix-icon\">\ud83d\udd39<\/span>\n <strong>Dialing Without Required SIM<\/strong>\n <\/div>\n<p>Some USSD commands only function when dialed from the primary or active SIM.<\/p>\n <\/li>\n <\/ul>\n \n \n<div id=\"completionMessage\" class=\"completion-message\">\n<h3>\ud83c\udf89 Troubleshooting Complete!<\/h3>\n<p>You now know the common causes of USSD code failures. Use this insight to address issues effectively.<\/p>\n <button id=\"resetButton\">Restart Troubleshooting<\/button>\n <\/div>\n <\/div>\n \n \n<div id=\"bonusMessage\" class=\"bonus-message\"><\/div>\n \n \n <script>\n (function(){\n const slider = document.getElementById('revealSlider');\n const listItems = document.querySelectorAll('#fixesList .listItem');\n const totalItems = listItems.length;\n const progressBar = document.getElementById('progressBar');\n const scoreDisplay = document.getElementById('score');\n const bonusMsg = document.getElementById('bonusMessage');\n const completionMessage = document.getElementById('completionMessage');\n const resetButton = document.getElementById('resetButton');\n const icon = document.getElementById('icon');\n \n slider.max = totalItems;\n slider.step = 1;\n \n function generateIncrements(n, total, minStart) {\n if (n <= 0) return [];\n if (n === 1) return [total];\n const firstIncrement = Math.max(minStart, Math.floor(Math.random() * (total \/ 3)) + Math.floor(total \/ 4));\n const remainingTotal = total - firstIncrement;\n const increments = [firstIncrement];\n if (n === 2) {\n increments.push(remainingTotal);\n return increments;\n }\n const remainingCount = n - 1;\n const cuts = [];\n while (cuts.length < remainingCount - 1) {\n const r = Math.floor(Math.random() * (remainingTotal - 1)) + 1;\n if (!cuts.includes(r)) cuts.push(r);\n }\n cuts.sort((a, b) => a - b);\n const remainingIncrements = [cuts[0]];\n for (let i = 1; i < cuts.length; i++) {\n remainingIncrements.push(cuts[i] - cuts[i - 1]);\n }\n remainingIncrements.push(remainingTotal - cuts[cuts.length - 1]);\n return increments.concat(remainingIncrements);\n }\n \n const randomIncrements = generateIncrements(totalItems, 100, 30);\n let techScore = 0;\n let maxSliderReached = 0;\n \n function updateSlider() {\n const sliderValue = parseInt(slider.value, 10);\n const progressPercent = (sliderValue \/ totalItems) * 100;\n progressBar.style.width = `${progressPercent}%`;\n \n listItems.forEach((item, index) => {\n if (index < sliderValue) {\n item.classList.add('visible');\n } else {\n item.classList.remove('visible');\n }\n });\n \n icon.style.transform = `translateX(${progressPercent}%)`;\n \n if (sliderValue > maxSliderReached) {\n let totalBonus = 0;\n for (let i = maxSliderReached; i < sliderValue; i++) {\n totalBonus += randomIncrements[i];\n }\n techScore += totalBonus;\n maxSliderReached = sliderValue;\n scoreDisplay.textContent = `Tech Score: ${techScore}`;\n bonusMsg.textContent = `+${totalBonus} points!`;\n bonusMsg.classList.add('show');\n setTimeout(() => {\n bonusMsg.classList.remove('show');\n }, 1500);\n const counterElement = document.getElementById('troubleshootCounter');\n counterElement.style.animation = 'pulse 0.5s ease';\n setTimeout(() => {\n counterElement.style.animation = '';\n }, 500);\n if (sliderValue === totalItems) {\n setTimeout(() => {\n completionMessage.style.display = 'block';\n }, 1000);\n }\n }\n }\n \n slider.addEventListener('input', updateSlider);\n slider.addEventListener('change', updateSlider);\n \n resetButton.addEventListener('click', () => {\n techScore = 0;\n maxSliderReached = 0;\n slider.value = 0;\n scoreDisplay.textContent = 'Tech Score: 0';\n progressBar.style.width = '0%';\n icon.style.transform = 'translateX(0%)';\n listItems.forEach(item => item.classList.remove('visible'));\n completionMessage.style.display = 'none';\n });\n })();\n <\/script>\n<\/body>\n<\/html>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common USSD Codes That Often Fail<\/strong><\/h2>\n\n\n\n<p>These USSD codes are commonly reported as <strong>not working<\/strong> due to various issues:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common USSD Codes That Often Fail and Their Fixes<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>USSD Code<\/strong><\/td><td><strong>Purpose<\/strong><\/td><td><strong>Common Issue<\/strong><\/td><td><strong>Fix<\/strong><\/td><\/tr><tr><td>#06#<\/td><td>IMEI Check<\/td><td>No response or invalid code error<\/td><td>Restart device, ensure strong network signal, or try on another phone<\/td><\/tr><tr><td>##<em>7780<\/em>##\u00a0<\/td><td>Factory Reset<\/td><td>Code does nothing or is blocked<\/td><td>Use the phone\u2019s settings menu for reset: <strong>Settings > System > Reset > Factory Reset<\/strong><\/td><\/tr><tr><td>#<em>34971539<\/em>#<\/td><td>Camera Information<\/td><td>No response or partially disabled<\/td><td>Try <strong>third-party camera diagnostic apps<\/strong> or check camera permissions<\/td><\/tr><tr><td>#0#<\/td><td>LCD Display Test<\/td><td>Code does not launch test mode<\/td><td>Check if manufacturer (Samsung, Xiaomi) disabled the function; use a display test app<\/td><\/tr><tr><td>##<em>0588<\/em>##<\/td><td>Proximity Sensor Test<\/td><td>No response or inaccurate readings<\/td><td>Calibrate proximity sensor via <strong>Settings > Accessibility > Sensor Calibration<\/strong><\/td><\/tr><tr><td>##232338##<\/td><td>Wi-Fi MAC Address<\/td><td>MAC address not displayed<\/td><td>Check <strong>Settings > About Phone > Status<\/strong> for MAC manually<\/td><\/tr><tr><td>##<em>2664<\/em>##<\/td><td>Touchscreen Test<\/td><td>No response or unrecognized command<\/td><td>Use <strong>Touchscreen Calibration Apps<\/strong> from Play Store<\/td><\/tr><tr><td><em>#<\/em>#232331#<em>#<\/em><\/td><td>Bluetooth Test<\/td><td>Test mode fails to start<\/td><td>Toggle Bluetooth off\/on, unpair and re-pair devices<\/td><\/tr><tr><td><em>\u00a0##7262626<\/em>##<\/td><td>Field Test Mode<\/td><td>Code not recognized<\/td><td>Check carrier settings or use third-party network monitoring apps<\/td><\/tr><tr><td>#43# \/ #43#<\/td><td>Call Waiting Toggle<\/td><td>Network rejects request<\/td><td>Contact carrier for supported call settings method<\/td><\/tr><tr><td>#31#<\/td><td>Hide Caller ID<\/td><td>Returns “connection error”<\/td><td>Try alternative format #31#phone-number<\/td><\/tr><tr><td>##002#<\/td><td>Disable All Call Forwarding<\/td><td>Call forwarding remains active<\/td><td>Check manual settings in <strong>Call Settings > Call Forwarding<\/strong><\/td><\/tr><tr><td>#07#<\/td><td>SAR Level Information<\/td><td>Restricted by carrier<\/td><td>Look for SAR details in <strong>Settings > About Phone > Regulatory Labels<\/strong><\/td><\/tr><tr><td><em>3001#12345#<\/em><\/td><td>Field Mode (iOS)<\/td><td>Does not open on latest iOS versions<\/td><td>Use <strong>Settings > General > About > Network<\/strong> instead<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Typical Symptoms of USSD Failure<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code.webp\" alt=\"##34971539## USSD code\" class=\"wp-image-44474\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/34971539-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code.webp\" alt=\"##7262626## USSD code\" class=\"wp-image-44473\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7262626USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code.webp\" alt=\"##232338## USSD code\" class=\"wp-image-44472\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/232338-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code.webp\" alt=\"##2664## USSD code\" class=\"wp-image-44471\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/2664-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code.webp\" alt=\"##0588## USSD code\" class=\"wp-image-44470\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/0588-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code.webp\" alt=\"#31# USSD code\" class=\"wp-image-44469\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/31-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code.webp\" alt=\"#07# ussd code\" class=\"wp-image-44468\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/07-ussd-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code.webp\" alt=\"#06# USSD code\" class=\"wp-image-44467\" style=\"width:163px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/06-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>“Invalid MMI code” or “Connection problem” message.<\/li>\n\n\n\n<li>The command appears to be running but never returns a result.<\/li>\n\n\n\n<li>The network rejects the command with an “unknown request” error.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Preliminary Troubleshooting Steps<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-columns is-not-stacked-on-mobile is-layout-flex wp-container-core-columns-is-layout-3 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code.webp\" alt=\"##02# USSD code\" class=\"wp-image-44466\" style=\"width:223px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/02-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code.webp\" alt=\"##7780## USSD code\" class=\"wp-image-44465\" style=\"width:223px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/7780-USSD-code-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div><\/div>\n<\/div>\n\n\n\n<p>I’ve run into USSD issues plenty of times, especially when trying to check my balance or access hidden settings on my <strong>Samsung<\/strong> and can work for any Android either HUAWEI, Motorola, Google pixel or even the iconic Sony. The first thing I always do is start with the basics\u2014because more often than not, a simple fix can get things working again.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Check Network Coverage<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"1200\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel.webp\" alt=\"screenshot of wifi calling from the quick panel\" class=\"wp-image-42421\" style=\"width:111px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel.webp 800w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-200x300.webp 200w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-683x1024.webp 683w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-768x1152.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-150x225.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-300x450.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/06\/screenshot-of-wifi-calling-from-the-quick-pannel-696x1044.webp 696w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p>I once found myself struggling with USSD codes when I had only one bar of signal. Moving to an area with better reception solved the issue immediately. If you’re on Wi-Fi calling, try disabling it. On my M33, I do this by going to <strong>Settings > Connections > Wi-Fi Calling<\/strong> and turning it off before dialing the USSD code.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Restart Your Phone<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call.webp\" alt=\"power-menu-to-restart-power-off-or-emergency-call\" class=\"wp-image-40376\" style=\"width:255px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/09\/power-menu-to-restart-power-off-or-emergency-call-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>This trick works more often than you\u2019d think. A simple restart can reset network connectivity. On my <strong>Samsung M33 5G<\/strong>, I just <strong>hold the power button<\/strong>, select <strong>Restart<\/strong>, and once the phone reboots, I try the USSD code again. This often fixes temporary glitches.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Verify Code Format<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"459\" height=\"1024\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-459x1024.webp\" alt=\"example of dialing a USSD code\" class=\"wp-image-44480\" style=\"width:237px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code-696x1552.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2025\/03\/example-of-dialing-a-USSD-code.webp 1080w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><figcaption class=\"wp-element-caption\"><strong><span style=\"text-decoration: underline;\"><em>example of dialing a USSD code<\/em><\/span><\/strong><\/figcaption><\/figure><\/div>\n\n\n<p>It might sound obvious, but I\u2019ve typed in USSD codes wrong plenty of times\u2014missing a single * or # can break the command. Always double-check the structure before hitting the call button.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Toggle Airplane Mode<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone.webp\" alt=\"screenshot of airplane mode stuck on the samsung phone\" class=\"wp-image-42797\" style=\"width:187px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/08\/screenshot-of-airplane-mode-stuck-on-the-samsung-phone-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>Once, I was stuck with a persistent <strong>“Connection problem or invalid MMI code”<\/strong> error. I fixed it by toggling Airplane Mode on and off. On my <strong>Samsung M33 5G<\/strong>, I swipe down from the top, tap <strong>Airplane Mode<\/strong>, wait for <strong>30 seconds<\/strong>, and then turn it off. This forces my phone to reconnect to the network.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5. Switch Between 2G, 3G, and 4G<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1440\" height=\"2560\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-scaled.webp\" alt=\"choosing 5g, 5g, LTE 3g and 2g from network connection mode image\" class=\"wp-image-41254\" style=\"width:382px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-scaled.webp 1440w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-169x300.webp 169w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-576x1024.webp 576w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-768x1365.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-864x1536.webp 864w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-1152x2048.webp 1152w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-150x267.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-300x533.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-696x1237.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/11\/choosing-5g-5g-LTE-3g-and-2g-from-network-connection-mode-image-1392x2475.webp 1392w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/figure><\/div>\n\n\n<p>This trick saved me when my USSD codes weren\u2019t working after switching SIM cards. Some codes don\u2019t function properly on VoLTE or 5G networks. On my <strong>Android<\/strong>, I went to <strong>Settings > Connections > Mobile Networks > Network Mode<\/strong> and switched to <strong>3G only<\/strong>, then tried the code again. It worked instantly.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>6. Disable Any Conflicting Services<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"2408\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app.webp\" alt=\"screenshot of tap to connect for the turbo VPN app\" class=\"wp-image-42614\" style=\"width:183px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app.webp 1080w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-135x300.webp 135w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-459x1024.webp 459w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-768x1712.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-689x1536.webp 689w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-919x2048.webp 919w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-150x334.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-300x669.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/07\/screenshot-of-tap-to-connect-for-the-turbo-VPN-app-696x1552.webp 696w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/figure><\/div>\n\n\n<p>I once installed a third-party dialer app that completely blocked my USSD codes. If you use call-blocking apps or VPNs, they might interfere. Try disabling them and then dialing the code. If you can still see the Key icon on your device that means you’re still connected to a VPN, here’s how you can <a href=\"https:\/\/fixing-pro.com\/fixed\/key-symbol-icon-android\/\" target=\"_blank\" rel=\"noreferrer noopener\">remove the key icon from the device<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/fixing-pro.com\/category\/fixed\/\" target=\"_blank\" rel=\"noreferrer noopener\">Here are More Pro Fixing Blogs<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Deeper Device-Level Fixes<\/strong><\/h3>\n\n\n\n<p>If the basics don\u2019t work, I move on to more advanced troubleshooting. These have worked for me when USSD codes refused to run.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Update Phone Software<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"853\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update.webp\" alt=\"phone updates\" class=\"wp-image-13208\" style=\"width:326px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update.webp 640w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-225x300.webp 225w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-150x200.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/04\/Phone-Update-300x400.webp 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n<p>Some USSD codes stopped working for me after I updated to <strong>Android 13<\/strong>. But a few months later, Samsung rolled out another update, and everything started working again. If you\u2019re having issues, check for updates under <strong>Settings > Software Update > Download and Install<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Reset Network Settings<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1928\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-scaled.webp\" alt=\"image of samsungphone with reset network and bluetooth settings confirmations\" class=\"wp-image-43310\" style=\"width:688px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-300x226.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1024x771.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-768x578.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1536x1157.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-2048x1542.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-80x60.webp 80w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-160x120.webp 160w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-150x113.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-696x524.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/10\/image-of-samsungphone-with-reset-network-and-bluetooth-settings-confirmations-1392x1048.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>When nothing else worked, resetting my network settings finally fixed my <strong>USSD errors<\/strong>. On <strong>Android<\/strong>, go to:<br><strong>Settings > General Management > Reset > Reset Network Settings<\/strong><strong><br><\/strong> This clears saved Wi-Fi networks, Bluetooth devices, and cellular settings\u2014so make sure you reconnect everything afterward.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Clear Phone Dialer App Cache (Android)<\/strong><\/h4>\n\n\n\n<p>Corrupt cache files can mess up USSD codes. I fixed this on my M33 by going to:<br><strong>Settings > Apps > Phone > Storage > Clear Cache.<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1441\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-scaled.webp\" alt=\"image of dialing the 4636 USSD Code on android google dialer\" class=\"wp-image-42168\" style=\"width:518px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-300x169.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1024x576.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-768x432.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1536x864.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-2048x1153.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-150x84.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-696x392.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2024\/05\/image-of-dialing-the-4636-USSD-Code-on-android-google-dialer-1392x783.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>If clearing the cache doesn\u2019t help, try <strong>Clear Data<\/strong>, but be aware this resets the app completely.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Check SIM Card Issues<\/strong><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1441\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-scaled.webp\" alt=\"image of sim card tray with sd card and sim inside\" class=\"wp-image-41339\" style=\"width:592px;height:auto\" srcset=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-scaled.webp 2560w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-300x169.webp 300w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1024x576.webp 1024w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-768x432.webp 768w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1536x864.webp 1536w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-2048x1153.webp 2048w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-150x84.webp 150w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-696x392.webp 696w, https:\/\/fixing-pro.com\/wp-content\/uploads\/2023\/12\/image-of-sim-card-tray-with-sd-card-and-sim-inside-1392x783.webp 1392w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure><\/div>\n\n\n<p>Once, my secondary SIM was interfering with USSD codes. I disabled <strong>SIM 2<\/strong> from <strong>Settings > Connections > SIM Manager<\/strong> and retried the code. It worked immediately. If you\u2019re facing similar issues, try removing one SIM card or testing the SIM in another device.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Carrier-Level Solutions<\/strong><\/h3>\n\n\n\n<p>If the fixes above don\u2019t work, the issue might be with your carrier. Here\u2019s how I approach it:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Contact Customer Support<\/strong><\/h4>\n\n\n\n<p>I once struggled with a USSD code for call forwarding. After multiple failed attempts, I called my carrier, and they told me the service wasn\u2019t available on my plan. If your code isn\u2019t working, ask your carrier if it\u2019s still supported.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Change Your Plan or Carrier Settings<\/strong><\/h4>\n\n\n\n<p>Some USSD codes only work on <strong>postpaid<\/strong> or <strong>premium plans<\/strong>. I realized my prepaid plan didn\u2019t support certain codes, so I had to switch to a different plan.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Use Carrier-Specific Alternatives<\/strong><\/h4>\n\n\n\n<p>I once had trouble checking my balance using <strong>123#<\/strong>, only to learn my carrier had changed it to <strong>#123#<\/strong>. Check your carrier\u2019s website or app for the latest codes.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"350\" src=\"https:\/\/fixing-pro.com\/wp-content\/uploads\/2022\/06\/Before-you-go-gif.gif\" alt=\"before you go gif\" class=\"wp-image-18574\" style=\"width:296px;height:auto\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\"><strong>Preventive Measures & Best Practices<\/strong><\/h3>\n\n\n\n<p>After fixing USSD issues multiple times, here\u2019s what I do to <strong>prevent<\/strong> them from happening again:<\/p>\n\n\n\n<p>\u2714 <strong>Keep Your Phone Updated<\/strong> \u2013 Bug fixes often restore broken USSD functionality.<br>\u2714 <strong>Document Working USSD Codes<\/strong> \u2013 I keep a list of working codes for my carrier.<br>\u2714 <strong>Avoid Third-Party Apps That Interfere<\/strong> \u2013 Uninstalling unnecessary dialer or call-blocking apps helped me.<br>\u2714 <strong>Stay Updated on Carrier Changes<\/strong> \u2013 Carriers sometimes modify or discontinue USSD services, so I check their support page occasionally.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Understanding USSD Codes and How They Work<\/strong><\/h2>\n\n\n\n<p>USSD (<strong>Unstructured Supplementary Service Data<\/strong>) codes\u2014often called <strong>MMI (Man-Machine Interface) codes<\/strong>\u2014are sequences starting with or #. Unlike SMS, USSD runs on <strong>GSM signaling channels<\/strong>, meaning it doesn\u2019t require an internet connection and responds <strong>instantly<\/strong>.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Dialing a Code<\/strong> \u2192 The phone sends a request to the network.<\/li>\n\n\n\n<li><strong>Carrier Processing<\/strong> \u2192 The carrier deciphers the request and prepares a response.<\/li>\n\n\n\n<li><strong>Instant Feedback<\/strong> \u2192 The result pops up on your screen in real-time.<\/li>\n<\/ol>\n\n\n\n<p>This process is why USSD is <strong>fast and reliable<\/strong>\u2014until it <strong>stops working<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>How USSD Codes Function<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When you dial a USSD code, your phone <strong>sends a request<\/strong> through <strong>GSM signaling channels<\/strong> to your carrier.<\/li>\n\n\n\n<li>The network <strong>processes the request<\/strong> and sends back an <strong>instant response<\/strong>, usually displayed as a pop-up or notification.<\/li>\n\n\n\n<li>This <strong>two-way communication<\/strong> happens in real-time, meaning the session stays open until the network provides a response.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Common Uses of USSD Codes<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Checking account balance:<\/strong> 123#, #BAL#<\/li>\n\n\n\n<li><strong>Enabling\/disabling call forwarding:<\/strong> 21#, #21#<\/li>\n\n\n\n<li><strong>Retrieving IMEI number:<\/strong> #06#<\/li>\n\n\n\n<li><strong>Testing network and hardware components:<\/strong> ##4636## (excluded from this article as I\u2019ve covered it before) <\/li>\n<\/ul>\n\n\n\n<div class=\"fixing-pro-faq\">\n <style>\n \/ Import Google Fonts \/\n @import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700&display=swap');\n\n \/ Define CSS variables for this component \/\n .fixing-pro-faq {\n --primary-gradient: linear-gradient(90deg, #ff3131 0%, #ff8f56 100%);\n --text-color: #333;\n --white: #fff;\n --light-gray: #f5f5f5;\n --border-radius: 8px;\n --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);\n }\n \n \/ Global resets and typography \/\n .fixing-pro-faq {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\n }\n \n \/* Container styling \/\n .fixing-pro-faq .container {\n max-width: 1000px;\n margin: 50px auto;\n padding: 0 20px;\n background-color: var(--light-gray);\n color: var(--text-color);\n line-height: 1.6;\n }\n \n .fixing-pro-faq .faq-header {\n text-align: center;\n margin-bottom: 40px;\n }\n \n .fixing-pro-faq .faq-header h2 {\n font-size: 2.8rem;\n margin-bottom: 15px;\n background: var(--primary-gradient);\n -webkit-background-clip: text;\n background-clip: text;\n color: transparent;\n display: inline-block;\n letter-spacing: 1px;\n }\n \n .fixing-pro-faq .accordion-container {\n margin-bottom: 40px;\n }\n \n .fixing-pro-faq .accordion-item {\n background-color: var(--white);\n border-radius: var(--border-radius);\n box-shadow: var(--box-shadow);\n margin-bottom: 20px;\n overflow: hidden;\n }\n \n .fixing-pro-faq .accordion-header {\n padding: 20px;\n cursor: pointer;\n display: flex;\n justify-content: space-between;\n align-items: center;\n font-weight: 500;\n font-size: 1.2rem;\n transition: background-color 0.3s ease;\n }\n \n .fixing-pro-faq .accordion-header:hover {\n background-color: rgba(255, 49, 49, 0.05);\n }\n \n .fixing-pro-faq .accordion-header::after {\n content: '+';\n font-size: 1.5rem;\n color: #ff3131;\n transition: transform 0.3s ease;\n }\n \n .fixing-pro-faq .accordion-item.active .accordion-header::after {\n content: '\u2212';\n transform: rotate(180deg);\n }\n \n .fixing-pro-faq .accordion-content {\n max-height: 0;\n overflow: hidden;\n transition: max-height 0.3s ease;\n padding: 0 20px;\n }\n \n .fixing-pro-faq .accordion-item.active .accordion-content {\n max-height: 1000px;\n padding: 0 20px 20px;\n }\n \n .fixing-pro-faq .accordion-content p {\n margin-bottom: 15px;\n font-size: 1rem;\n font-weight: 300;\n }\n \n .fixing-pro-faq .accordion-content a {\n color: #ff3131;\n text-decoration: none;\n font-weight: 500;\n }\n \n .fixing-pro-faq .accordion-content a:hover {\n text-decoration: underline;\n }\n \n .fixing-pro-faq .accordion-content ul {\n margin-left: 20px;\n margin-bottom: 15px;\n }\n \n .fixing-pro-faq .accordion-content li {\n margin-bottom: 8px;\n }\n \n @media (max-width: 768px) {\n .fixing-pro-faq .faq-header h2 {\n font-size: 2rem;\n }\n \n .fixing-pro-faq .accordion-header {\n font-size: 1rem;\n padding: 15px;\n }\n }\n <\/style>\n \n<div class=\"container\">\n<div class=\"faq-header\">\n<h2><strong>USSD Code Issues<\/strong><\/h2>\n <\/div>\n \n<div class=\"accordion-container\">\n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Why is my USSD code not working?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n USSD codes may fail due to network instability, incorrect code formatting, carrier restrictions, or software conflicts on your device. If you suspect advanced network features are disabled, you might need to check whether VoLTE or related options are enabled. For instance, if you\u2019re dealing with VoLTE not showing up, you can investigate further with this <a href=\"https:\/\/fixing-pro.com\/fixed\/troubleshoot-volte\/\" target=\"_blank\"><strong>VoLTE troubleshooting guide<\/strong><\/a>.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>How do I fix the “Connection problem or invalid MMI code” error?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n This error often appears when your phone cannot complete a USSD request due to poor signal, SIM conflicts, or temporary network issues. Try restarting your device or toggling Airplane Mode. If the problem persists, double-check your carrier\u2019s coverage in your area.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Do all USSD codes work on every phone?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Not necessarily. Some USSD codes are exclusive to specific manufacturers (such as Samsung or Xiaomi) or carriers. If a code fails, confirm that it\u2019s compatible with your device. Also, ensure your operating system hasn\u2019t blocked or altered the code\u2019s functionality after a recent update.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Can using USSD codes harm my phone?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Most USSD codes are safe, but certain ones\u2014like those for factory resets\u2014can erase data. Always verify a code\u2019s purpose before dialing it. If you encounter severe software issues, such as a phone stuck in a boot loop, you might consider this <a href=\"https:\/\/fixing-pro.com\/fixed\/android-restart-loop-guide\/\" target=\"_blank\"><strong>Android restart-loop guide<\/strong><\/a> for a potential fix.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>How do I know if my carrier has blocked a USSD code?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Carriers may restrict certain USSD codes to prevent misuse. If a code that previously worked now fails, it might have been disabled or blocked. Verify this by checking your carrier\u2019s official website or contacting support. If verifications like OTP messages are also failing, consider consulting this <a href=\"https:\/\/fixing-pro.com\/fixed\/otp-not-receiving-fix\/\" target=\"_blank\"><strong>OTP-not-receiving fix<\/strong><\/a> for guidance.\n <\/p>\n <\/div>\n <\/div>\n \n \n<div class=\"accordion-item\">\n<h3 class=\"accordion-header\"><strong>Can I use USSD codes without an internet connection?<\/strong><\/h3>\n<div class=\"accordion-content\">\n<p>\n Yes. USSD codes operate over GSM channels and do not require an internet connection. However, if you rely on Wi-Fi calling, network conflicts might mimic a failed USSD session. If you suspect Wi-Fi calling is interfering, try switching it off or refer to this <a href=\"https:\/\/fixing-pro.com\/fixed\/wi-fi-calling-not-working\/\" target=\"_blank\"><strong>Wi-Fi calling not working<\/strong><\/a> guide.\n <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n \n <script>\n (function() {\n const accordionHeaders = document.querySelectorAll('.fixing-pro-faq .accordion-header');\n \n accordionHeaders.forEach(header => {\n header.addEventListener('click', function() {\n \/\/ Toggle active class for the clicked item\n const accordionItem = this.parentElement;\n accordionItem.classList.toggle('active');\n \n \/\/ Close other items when one is opened\n document.querySelectorAll('.fixing-pro-faq .accordion-item').forEach(item => {\n if (item !== accordionItem) {\n item.classList.remove('active');\n }\n });\n });\n });\n })();\n <\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>USSD codes are <strong>powerful tools<\/strong>, but failures are common due to <strong>device settings, carrier policies, or incorrect formatting<\/strong>. By following this <strong>troubleshooting guide<\/strong>, you can <strong>identify, diagnose, and fix<\/strong> most USSD-related issues quickly. If all else fails, contacting your carrier for clarification or alternative methods is the best approach.<\/p>\n\n\n\n<p>I hope you found the information helpful. Here is our Contact Us page. If you still need any guidance, feel free to reach out to us\u2014it’s free.<\/p>\n\n\n\n<p>Got a question about a specific USSD code? Let me know in the comments!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I\u2019ve spent years relying on USSD codes to quickly check balances, tweak call settings, and retrieve phone details. These short numeric commands have saved me time\u2014until they stopped working, leaving me staring at an error message. If you\u2019ve ever dialed a code and received a \u201cConnection problem\u201d or \u201cInvalid MMI code\u201d response, you\u2019re not alone. […]<\/p>\n","protected":false},"author":1,"featured_media":44479,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281],"tags":[36,282],"class_list":{"0":"post-44460","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-fixed","8":"tag-android-how-to","9":"tag-pro-fix"},"yoast_head":"\n<title>Common USSD Code Failures (#code#) How to Fix Them<\/title>\n<meta name=\"description\" content=\"This is exactly the Common USSD Code Failures (#code#) How to Fix Them by the Fixing Pro . 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