Xiaomi Secret Codes & USSD Dial Codes (2026)

MIUI / HyperOS engineering codes

Xiaomi secret codes cover both MIUI and the newer HyperOS builds, and the ecosystem is unusually generous with engineering access. The central entry point is the CIT hardware test suite, which walks through the display, touch panel, speakers, receiver, microphones, vibration motor, proximity and light sensors, gyroscope, cameras, Wi-Fi, Bluetooth and fingerprint reader in sequence, marking each subsystem pass or fail.

Alongside CIT, Xiaomi keeps standard Android diagnostic strings for battery and usage statistics, plus firmware and hardware version screens that tell you the exact ROM channel your device is running. That is useful before an update, a region switch or a bootloader unlock request, because Xiaomi's global, EEA, Indian and Chinese builds behave differently.

One warning specific to Xiaomi: several engineering menus on older MIUI versions expose write operations for the modem and calibration data. Reading values is harmless, but committing changes in those screens can degrade cellular performance in a way that only a full flash will repair. Stick to the codes marked safe on this page unless you are following manufacturer service documentation.

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

Full Xiaomi secret code list (43 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.

Xiaomi secret codes with description, category and risk level
What it does	Category	Risk level
Testing & Usage Menu. Phone info, battery and usage statistics.	diagnostics	Safe — read only
IMEI Number. Displays the device IMEI / MEID.	info	Safe — read only
Build & Version Info. Shows PDA, CSC and build-time information.	info	Safe — read only
Service Info. Displays service info including SIM and RF details on Xiaomi devices.	info	Safe — read only
Engineering Menu. Opens the deep engineering menu (some regions) for background debugging.	diagnostic	Caution — changes settings
Hardware Test (CIT). Opens Xiaomi's full component test suite (screen, sensors, camera, speaker).	hardware-test	Safe — read only
Hardware Test (legacy). Older hardware test menu on some MIUI versions.	hardware-test	Safe — read only
Bug Report / Dumpstate. Generates a diagnostic bug report (dumpstate/logcat) on supported builds.	diagnostics	Safe — read only
Touchscreen Test. Tests touch response across the display.	hardware-test	Safe — read only
Hardware Test (alt). Alternative component test menu on some MIUI/HyperOS builds.Community-reported · unverified	hardware-test	Safe — read only
Call Forwarding Status. Shows whether all-call forwarding is active and to which number.	network	Safe — read only
Call Waiting Status. Shows whether call waiting is currently enabled.	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
Wi-Fi MAC Address. Displays the device's Wi-Fi MAC address.	info	Safe — read only
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
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
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 Xiaomi codes

Open the Xiaomi 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.

Xiaomi secret codes — FAQ

Todos os celulares Xiaomi aceitam os mesmos códigos secretos?

Não. O suporte a códigos depende do modelo, da versão do firmware e, em muitos casos, da operadora que forneceu o aparelho. Modelos Xiaomi mais antigos costumam disponibilizar mais menus de serviço do que os lançamentos mais recentes, porque os fabricantes restringem gradualmente as ferramentas de engenharia a aplicativos de diagnóstico assinados. Se um código não faz nada, é quase certo que ele foi removido ou desativado na sua versão de software, e não digitado incorretamente.

É seguro discar códigos secretos da Xiaomi?

Os códigos que marcamos como "seguros" apenas exibem informações ou abrem um menu de testes somente de leitura, portanto não podem danificar seu celular. Os códigos marcados como "cuidado" alteram uma configuração ou iniciam uma rotina de hardware que você deve entender primeiro, e os marcados como "destrutivos" apagam os dados do usuário instantaneamente, sem caixa de diálogo de confirmação. Sempre faça um backup antes de executar qualquer código da categoria destrutiva.

Por que nada acontece quando digito um código?

Três motivos comuns: o código não é compatível com seu firmware, sua operadora bloqueou a sequência USSD ou o discador exige que você pressione o botão de chamada para aquela sequência específica. Experimente o código com outro chip ou no modo avião e confira cada caractere, incluindo o asterisco inicial e o símbolo de cerquilha final.

Usar esses códigos anula a garantia do meu Xiaomi?

A simples leitura de informações de diagnóstico não anula a garantia. No entanto, alterar configurações de bandas de rádio, executar operações de gravação em um menu de engenharia ou realizar uma formatação de fábrica pode deixar seu dispositivo em uma condição que a assistência técnica considere causada pelo usuário. Limite-se a códigos somente de leitura, a menos que esteja seguindo orientações oficiais de reparo.

Esses códigos podem desbloquear um celular Xiaomi bloqueado por operadora?

Não. O desbloqueio de rede exige um código de desbloqueio emitido pela operadora ou uma solicitação oficial de desbloqueio à sua operadora. Qualquer site que prometa um código de discagem universal e gratuito para desbloqueio está enganando você. Os códigos listados aqui apenas disponibilizam diagnósticos, status da rede, informações do firmware e rotinas de restauração de fábrica.

Como encontro meu IMEI em um dispositivo Xiaomi?

Disque *#06# em qualquer celular GSM ou LTE, incluindo todos os modelos Xiaomi, e o IMEI aparecerá imediatamente. Você também pode validar o número com nosso verificador de IMEI, que executa a soma de verificação de Luhn usada pela GSMA para detectar números IMEI digitados incorretamente ou inventados.