OnePlus Secret Codes & USSD Dial Codes (2026)
OxygenOS engineering menu
OnePlus secret codes centre on the OxygenOS engineering mode, a single menu that bundles a full component test suite behind one dial string. From there you can run the display and touch tests, check the alert slider, exercise both the earpiece and the loudspeaker, verify the fingerprint sensor and read the raw values from the accelerometer, gyroscope and proximity sensor.
This matters on OnePlus hardware in particular because several long-running community issues, such as green-tint displays, alert slider failures and haptic motor rattle, are far easier to confirm with the built-in test than by eye. Running the test and recording the result gives you concrete evidence for a warranty claim.
OxygenOS also keeps standard Android diagnostic strings for battery statistics and firmware information. As with every brand on this site, the reset family of codes is immediate and irreversible: OnePlus does not present a confirmation dialog once a factory format string is accepted by the dialer, so back up before you experiment.
Checking a used OnePlus handset? Run its IMEI through our free IMEI checker — dial *#06# to reveal the 15-digit number.
Full OnePlus 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.
| Code | What it does | Category | Risk level |
|---|---|---|---|
| IMEI Number. Displays the OnePlus device IMEI. | info | Safe — read only | |
| Testing & Usage Menu. Phone info, battery and usage statistics. | diagnostics | Safe — read only | |
| Verify OnePlus Product. Verifies the authenticity of a OnePlus device using the built-in check. | info | Safe — read only | |
| Engineering / Diagnostic Test. Opens OnePlus's engineering mode with a full set of manual component tests. | hardware-test | Safe — read only | |
| PCB / Hardware Version. Shows the mainboard/PCB hardware revision. | info | Safe — read only | |
| Logkit / Feedback Tools. Opens diagnostic logging tools. For developer/support use.Community-reported · unverified | diagnostics | Caution — changes settings | |
| Factory Data Reset (partial). Clears app data, downloaded apps and accounts. Keeps system apps. Back up first. | reset | Caution — changes settings | |
| 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 | |
| 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 | |
| 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 | |
| Call Forwarding Status. Shows whether all-call forwarding is active and to which number. | network | Safe — read only | |
| 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 | |
| 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 |
How to use OnePlus codes
- Open the OnePlus 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.
OnePlus secret codes — FAQ
Tous les téléphones OnePlus prennent-ils en charge les mêmes codes secrets ?
Non. La prise en charge des codes dépend du modèle, de la version du micrologiciel et, dans de nombreux cas, de l’opérateur qui a fourni le téléphone. Les anciens modèles OnePlus donnent souvent accès à davantage de menus de service que les modèles récents, car les fabricants réservent progressivement les outils d’ingénierie aux applications de diagnostic signées. Si un code ne produit aucun effet, il a presque certainement été supprimé ou désactivé sur votre version plutôt que mal saisi.
Peut-on composer les codes secrets OnePlus sans risque ?
Les codes que nous indiquons comme « sûrs » affichent uniquement des informations ou ouvrent un menu de test en lecture seule : ils ne peuvent donc pas endommager votre téléphone. Les codes marqués « prudence » modifient un paramètre ou lancent une procédure matérielle dont vous devez d’abord comprendre le fonctionnement, et ceux marqués « destructifs » effacent instantanément les données utilisateur sans fenêtre de confirmation. Effectuez toujours une sauvegarde avant d’exécuter un code de la catégorie destructive.
Pourquoi rien ne se passe-t-il lorsque je saisis un code ?
Trois raisons courantes : le code n’est pas pris en charge par votre micrologiciel, votre opérateur réseau a bloqué la séquence USSD, ou l’application Téléphone exige que vous appuyiez sur le bouton d’appel pour cette séquence précise. Essayez le code avec une autre carte SIM ou en mode avion, et vérifiez chaque caractère, y compris l’astérisque initial et le dièse final.
L’utilisation de ces codes annule-t-elle ma garantie OnePlus ?
La simple consultation d’informations de diagnostic n’annule pas une garantie. Toutefois, modifier les paramètres de bandes radio, effectuer des opérations d’écriture dans un menu d’ingénierie ou réaliser un formatage d’usine peut laisser votre appareil dans un état qu’un centre de réparation pourrait considérer comme causé par l’utilisateur. Limitez-vous aux codes en lecture seule, sauf si vous suivez des instructions de réparation officielles.
Ces codes peuvent-ils déverrouiller un téléphone OnePlus bloqué sur un réseau ?
Non. Le déverrouillage réseau nécessite un code fourni par l’opérateur ou une demande officielle de déverrouillage auprès de celui-ci. Tout site promettant un code de numérotation universel et gratuit pour le déverrouillage vous induit en erreur. Les codes répertoriés ici donnent uniquement accès aux diagnostics, à l’état du réseau, aux informations du micrologiciel et aux procédures de réinitialisation d’usine.
Comment trouver mon IMEI sur un appareil OnePlus ?
Composez *#06# sur n’importe quel téléphone GSM ou LTE, y compris tous les modèles OnePlus, et l’IMEI s’affiche immédiatement. Vous pouvez également valider le numéro avec notre vérificateur IMEI, qui calcule la somme de contrôle de Luhn utilisée par la GSMA pour détecter les numéros IMEI mal saisis ou inventés.
Guides de dépannage OnePlus
- OnePlus Overheating — Causes & Fixes (2026)
- OnePlus Battery Draining Fast — Causes & Fixes (2026)
- OnePlus Charging Slowly — Causes & Fixes (2026)
- OnePlus Touchscreen Not Working — Causes & Fixes (2026)
- OnePlus Screen Not Working — Causes & Fixes (2026)
- OnePlus Wi-Fi Not Connecting — Causes & Fixes (2026)