Huawei Secret Codes & USSD Dial Codes (2026)

EMUI / HarmonyOS codes

Huawei secret codes span both EMUI and HarmonyOS builds and are aimed squarely at hardware verification. The project menu is the main tool: it groups an automatic full-device test with individual checks for the screen, touch panel, receiver, speaker, microphones, cameras, sensors, vibration motor and charging circuitry, then prints a pass or fail summary you can screenshot.

Huawei also exposes firmware, software and hardware version screens. These are more important on Huawei hardware than most, because devices sold in different regions carry different firmware branches, and knowing your exact build number determines which official update packages will install at all.

Because recent Huawei devices ship without Google Mobile Services, some generic Android diagnostic strings behave differently or are absent entirely. Codes in the diagnostic and info categories below are read-only and safe to try; anything marked destructive triggers a data wipe as soon as it is entered, with no confirmation and no recovery path.

Checking a used Huawei handset? Run its IMEI through our free IMEI checker — dial *#06# to reveal the 15-digit number.

Full Huawei secret code list (41 codes)

Every code below is documented from public device and service documentation. None of these codes erase user data, but always read the risk column first.

Huawei secret codes with description, category and risk level
What it does	Category	Risk level
Show IMEI. Displays the device IMEI number.	info	Safe — read only
Testing & Usage Menu. Phone info, battery and usage statistics (older EMUI).Community-reported · unverified	diagnostics	Safe — read only
Project / Engineer Menu. Opens Huawei's project menu (network, background settings, logs). Advanced — changing values can affect the device.Community-reported · unverified	diagnostics	Caution — changes settings
Product Info. Displays product model, region and internal software identifiers.	info	Safe — read only
Extended Project Menu. Opens Huawei's extended engineering menu. Advanced — for diagnostics only.Community-reported · unverified	diagnostics	Caution — changes settings
Hardware / Factory Info. Shows factory and hardware information on some EMUI builds.Community-reported · unverified	info	Safe — read only
Wi-Fi MAC Address. Displays the device's Wi-Fi MAC address.	info	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
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
Factory Data Reset (partial). Clears app data, downloaded apps and accounts. Keeps system apps. Back up first.	reset	Caution — changes settings
GPS Test. Runs a quick GPS test to verify satellite lock and location performance.	diagnostics	Safe — read only
Wireless LAN Test. Opens the Wi-Fi / wireless LAN test screen.	hardware-test	Safe — read only
Vibration & Backlight Test. Runs a test cycle for the vibration motor and screen backlight.	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
Call Waiting Status. Shows whether call waiting is currently enabled.	network	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 Huawei codes

Open the Huawei dialer 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.

Huawei secret codes — FAQ

¿Todos los teléfonos Huawei admiten los mismos códigos secretos?

No. La compatibilidad con los códigos depende del modelo, de la versión del firmware y, en muchos casos, del operador que suministró el teléfono. Los modelos Huawei más antiguos suelen ofrecer más menús de servicio que los más recientes, porque los fabricantes restringen gradualmente el acceso a las herramientas de ingeniería mediante aplicaciones de diagnóstico firmadas. Si un código no hace nada, casi con total seguridad se ha eliminado o desactivado en tu versión, en lugar de haberse escrito incorrectamente.

¿Es seguro marcar los códigos secretos de Huawei?

Los códigos que marcamos como "seguros" solo muestran información o abren un menú de pruebas de solo lectura, por lo que no pueden dañar tu teléfono. Los códigos marcados como "precaución" cambian un ajuste o inician una rutina de hardware que deberías comprender primero, y los códigos marcados como "destructivos" borran los datos del usuario al instante sin un diálogo de confirmación. Haz siempre una copia de seguridad antes de ejecutar cualquier código de la categoría destructiva.

¿Por qué no ocurre nada cuando introduzco un código?

Hay tres motivos habituales: el código no es compatible con tu firmware, tu operador de red ha bloqueado la cadena USSD o el marcador requiere que pulses el botón de llamada para esa secuencia concreta. Prueba el código con otra SIM o en modo avión y comprueba cada carácter, incluidos el asterisco inicial y la almohadilla final.

¿Usar estos códigos anulará la garantía de mi Huawei?

La simple lectura de información de diagnóstico no anula la garantía. Sin embargo, cambiar los ajustes de bandas de radio, ejecutar operaciones de escritura en un menú de ingeniería o realizar un formateo de fábrica puede dejar el dispositivo en un estado que un servicio técnico podría considerar causado por el usuario. Limítate a los códigos de solo lectura, salvo que sigas instrucciones oficiales de reparación.

¿Pueden estos códigos liberar un teléfono Huawei con bloqueo de red?

No. La liberación de red requiere un código de desbloqueo proporcionado por el operador o una solicitud oficial de liberación a través de tu operador. Cualquier sitio que prometa un código de marcación universal y gratuito para desbloquearlo te está engañando. Los códigos que se enumeran aquí solo dan acceso a diagnósticos, estado de la red, información del firmware y rutinas de restablecimiento de fábrica.

¿Cómo encuentro mi IMEI en un dispositivo Huawei?

Marca *#06# en cualquier teléfono GSM o LTE, incluidos todos los modelos Huawei, y el IMEI aparecerá inmediatamente. También puedes validar el número con nuestro comprobador de IMEI, que calcula la suma de verificación de Luhn utilizada por la GSMA para detectar números IMEI mal escritos o inventados.