Samsung Secret Codes & USSD Dial Codes (2026)
Galaxy secret codes & service menus
Samsung secret codes are short USSD and MMI sequences typed into the Galaxy dialer that open service menus normally reserved for engineers and repair technicians. Because One UI is built on top of Android, Samsung ships two layers of hidden tools: the standard Android MMI strings that work on almost every handset, and Samsung's own service mode menus such as the LCD test grid and the *#0011# network status screen.
In practice these codes let you confirm whether a fault is hardware or software before you pay for a repair. You can sweep the display for dead pixels, test each speaker and microphone channel, read raw battery voltage and temperature, check touch-screen digitiser accuracy, view the exact firmware build, and inspect the serving cell and signal strength your modem is actually locked to.
Dialling is deliberate: most Samsung sequences trigger the moment the last character is typed, so there is no confirmation step and no undo. That matters most for the reset family of codes, which begin wiping user data instantly. Treat anything labelled destructive on this page as a live command, not a menu, and take a full backup first.
Checking a used Samsung handset? Run its IMEI through our free IMEI checker — dial *#06# to reveal the 15-digit number.
Full Samsung secret code list (53 codes)
Every code below is documented from public device and service documentation. 1 of them are destructive and will erase user data instantly — they are marked in red.
| Code | What it does | Category | Risk level |
|---|---|---|---|
| Phone Info & Usage Stats. Opens the Android testing menu with battery status, cell info, Wi-Fi info and usage statistics. | diagnostic | Safe — read only | |
| Soft Reset. Resets phone settings and clears application data. Back up before running. | reset | Caution — changes settings | |
| Wi-Fi MAC Address. Displays the Wi-Fi MAC address of the device. | network | Safe — read only | |
| GPS Test. Runs a quick GPS test to verify satellite lock and location performance. | diagnostic | Safe — read only | |
| Vibration & Backlight Test. Runs a test cycle for the vibration motor and screen backlight. | diagnostic | Safe — read only | |
| IMEI Number. Displays the device IMEI / serial identification number. Works on virtually every GSM phone. | info | Safe — read only | |
| Real-Time Clock Test. Checks the device real-time clock. | hardware-test | Safe — read only | |
| Hardware Version. Displays the FTA hardware version. | info | Safe — read only | |
| Software Version. Displays the FTA software version. | info | Safe — read only | |
| Audio Loopback Test. Runs an audio loopback test on the earpiece/mic. | hardware-test | Safe — read only | |
| USB Logging Control. Toggles USB logging/diagnostics. Advanced — leave off for normal use. | diagnostics | Caution — changes settings | |
| Hardware Test Menu. Samsung's built-in test menu for display, speakers, sensors, camera and vibration. | hardware-test | Safe — read only | |
| Firmware Version. Shows PDA, phone and CSC firmware versions for your Galaxy device. | info | Safe — read only | |
| Software & Hardware Info. Displays combined software and hardware version information. | info | Safe — read only | |
| Battery Status. Shows battery voltage, temperature and detailed capacity (ADC readings). | info | Safe — read only | |
| Service Mode / Network Status. Displays network state, cell tower info and signal details. | diagnostics | Safe — read only | |
| Quick Test Menu. Shortcut menu to test individual components (speaker, camera, sensors). | hardware-test | Safe — read only | |
| Diagnostic Configuration. Opens the service/diagnostic configuration menu. Changing values can affect connectivity. | diagnostics | Caution — changes settings | |
| USB Settings. Changes USB mode configuration. Wrong settings can break USB connectivity. | diagnostics | Caution — changes settings | |
| Full Factory Format. Instantly wipes ALL user data and reinstalls firmware with NO confirmation and no undo. Use with extreme care. | reset | Destructive — erases data | |
| SysDump Mode. Opens Samsung's system dump / debug log menu. Advanced — used for troubleshooting. | diagnostics | Caution — changes settings | |
| Light Sensor Test. Tests the ambient light sensor used for auto-brightness. | hardware-test | Safe — read only | |
| Call Forwarding Status. Shows whether all-call forwarding is active and to which number. | network | Safe — read only | |
| Forwarding When Unanswered. Shows the number that receives calls you don't answer. | network | Safe — read only | |
| Forwarding When Unreachable. Shows where calls go when your phone is off or has no signal. | network | Safe — read only | |
| Call Waiting Status. Shows whether call waiting is currently enabled. | network | Safe — read only | |
| Forwarding When Busy. Shows the number that receives calls while you're on another call. | network | Safe — read only | |
| Cancel All Forwarding. Turns off every type of call forwarding on the line. | network | Caution — changes settings | |
| Caller ID Status. Shows whether your number is hidden or shown on outgoing calls. | network | Safe — read only | |
| Wireless LAN Test. Opens the Wi-Fi / wireless LAN test screen. | hardware-test | Safe — read only | |
| LCD Display Test. Opens the screen test suite (colors, dead pixels, touch). | hardware-test | Safe — read only | |
| Touchscreen Test. Tests touch response across the screen. | hardware-test | Safe — read only | |
| Proximity Sensor Test. Verifies the proximity sensor used to blank the screen during calls. | hardware-test | Safe — read only | |
| Audio / Melody Test. Runs a speaker and audio playback test. | hardware-test | Safe — read only | |
| Bluetooth Test. Opens the Bluetooth hardware test screen. | hardware-test | Safe — read only | |
| Camera Information. Shows camera firmware details. Avoid the firmware-update option unless you know what you're doing. | diagnostics | Caution — changes settings | |
| Field Test (GSM). Runs a GSM field/signal test. | diagnostics | Safe — read only | |
| Service Mode. Opens the service/test mode menu on many devices. Advanced — for diagnostics only. | diagnostics | Caution — changes settings | |
| Call Barring Status. Shows whether outgoing/incoming call barring is switched on. | network | Safe — read only | |
| Enable Call Waiting. Turns on call waiting so a second caller can reach you mid-call. | network | Caution — changes settings | |
| Disable Call Waiting. Turns off call waiting. | network | Caution — changes settings | |
| Build & Version Info. Shows PDA, phone, CSC and build-time information. | info | Safe — read only | |
| Touchscreen Firmware Version. Displays the touchscreen controller firmware version. | hardware-test | Safe — read only | |
| RAM Version. Shows the device RAM type/version. | info | Safe — read only | |
| Packet Loopback Test. Runs an audio/packet loopback hardware test. | hardware-test | Safe — read only | |
| Melody / Audio Test. Plays a test melody to check the speaker. | hardware-test | Safe — read only | |
| Bluetooth Address. Displays the device's Bluetooth MAC address. | info | Safe — read only | |
| Advanced GPS Test. Opens a detailed GPS/location diagnostics screen. | diagnostics | Safe — read only | |
| PDA / Phone / RF Info. Shows PDA, phone, hardware and RF firmware version details. | info | Safe — read only | |
| Power-Button Behaviour. Changes what the power button does on long-press (end call vs menu). Changes a setting. | diagnostics | Caution — changes settings | |
| Backup Media Files. Opens a file-copy screen to back up media (photos, videos, audio). | diagnostics | Caution — changes settings | |
| MediaTek Engineer Mode. Opens the engineer menu on MediaTek (MTK) chipset phones. Advanced — changing values can affect radios. | diagnostics | Caution — changes settings | |
| Google Talk Service Monitor. Legacy GTalk service monitor screen (older Android).Community-reported · unverified | diagnostics | Safe — read only |
How to use Samsung codes
- Open the Samsung Phone app and go to the keypad, exactly as if you were dialling a number.
- Type the code precisely as shown, including the leading
*and the trailing#. Autocorrect and paste can drop characters, so type it out. - Most sequences fire the moment the final character is entered — you usually do not press call.
- If the screen does not change, press the call button once; a few USSD strings need it.
- Back up photos, messages and app data before running anything marked destructive, then confirm you are on the right device.
- Nothing at all happening usually means the code is disabled on your firmware or blocked by your carrier — it is not a fault with your handset.
Samsung secret codes — FAQ
آیا همه گوشیهای Samsung از کدهای مخفی یکسان پشتیبانی میکنند؟
خیر. پشتیبانی از کدها به مدل، نسخه میانافزار و در بسیاری از موارد به اپراتوری که گوشی را عرضه کرده بستگی دارد. مدلهای قدیمیتر Samsung اغلب منوهای خدماتی بیشتری نسبت به جدیدترین مدلها در دسترس میگذارند، زیرا سازندگان بهتدریج دسترسی به ابزارهای مهندسی را به برنامههای عیبیابی دارای امضای دیجیتال محدود میکنند. اگر کدی هیچ کاری نمیکند، تقریباً بهطور قطع در نسخه نرمافزاری شما حذف یا غیرفعال شده است، نه اینکه اشتباه تایپ شده باشد.
آیا شمارهگیری کدهای مخفی Samsung امن است؟
کدهایی که با برچسب «ایمن» مشخص میکنیم فقط اطلاعات را نمایش میدهند یا منوی آزمون فقطخواندنی را باز میکنند، بنابراین نمیتوانند به گوشی شما آسیب بزنند. کدهای دارای برچسب «احتیاط» تنظیمی را تغییر میدهند یا فرایند سختافزاریای را آغاز میکنند که باید ابتدا آن را بشناسید، و کدهای دارای برچسب «مخرب» دادههای کاربر را فوراً و بدون پنجره تأیید پاک میکنند. همیشه پیش از اجرای هر مورد از دسته مخرب، نسخه پشتیبان تهیه کنید.
چرا وقتی کدی را وارد میکنم هیچ اتفاقی نمیافتد؟
سه دلیل رایج وجود دارد: کد در میانافزار شما پشتیبانی نمیشود، اپراتور شبکه رشته USSD را مسدود کرده است، یا شمارهگیر برای آن توالی خاص نیاز دارد دکمه تماس را بزنید. کد را با سیمکارتی دیگر یا در حالت هواپیما امتحان کنید و تکتک نویسهها، از جمله ستاره آغازین و علامت مربع پایانی را بررسی کنید.
آیا استفاده از این کدها گارانتی Samsung من را باطل میکند؟
صرفاً خواندن اطلاعات عیبیابی گارانتی را باطل نمیکند. بااینحال، تغییر تنظیمات باند رادیویی، اجرای عملیات نوشتن در منوی مهندسی یا انجام فرمت کارخانهای میتواند دستگاه را در وضعیتی قرار دهد که مرکز خدمات آن را ناشی از اقدام کاربر بداند. فقط از کدهای فقطخواندنی استفاده کنید، مگر اینکه راهنمای رسمی تعمیر را دنبال میکنید.
آیا این کدها می‌توانند قفل شبکه گوشی Samsung را باز کنند؟
خیر. رفع قفل شبکه به کد رفع قفل صادرشده توسط اپراتور یا درخواست رسمی رفع قفل از طریق اپراتورتان نیاز دارد. هر سایتی که وعده یک کد شمارهگیری رایگان و همگانی برای رفع قفل می‌دهد، شما را گمراه میکند. کدهای فهرست‌شده در اینجا فقط عیبیابی، وضعیت شبکه، اطلاعات میانافزار و فرایندهای بازنشانی کارخانه را در دسترس قرار میدهند.
چگونه IMEI خود را در دستگاه Samsung پیدا کنم؟
روی هر گوشی GSM یا LTE، از جمله تمام مدلهای Samsung، *#06# را شمارهگیری کنید تا IMEI فوراً ظاهر شود. همچنین میتوانید شماره را با ابزار بررسی IMEI ما اعتبارسنجی کنید که مجموع کنترلی لون مورد استفاده GSMA را برای تشخیص شمارههای IMEI اشتباهتایپشده یا ساختگی اجرا میکند.
راهنماهای عیبیابی Samsung
- Samsung Overheating — Causes & Fixes (2026)
- Samsung Battery Draining Fast — Causes & Fixes (2026)
- Samsung Charging Slowly — Causes & Fixes (2026)
- Samsung Touchscreen Not Working — Causes & Fixes (2026)
- Samsung Screen Not Working — Causes & Fixes (2026)
- Samsung Wi-Fi Not Connecting — Causes & Fixes (2026)