Hướng dẫn T-Mobile's Device Unlock App
- An Android device that supports the Mobile Device Unlock app.
- An active data connection via 3G/4G/LTE or Wi-Fi that has strong signal.
- From that Application list, tap Device Unlock.
- Tap Continue.
- Permanent Unlock
- If successful, restart the device to apply the settings.
- Note: If you do not restart the device, you will have a persistent alert in the notification tray.
- Check that you have an active data connection.
Note: For temporary unlocks, you must be connected to the T-Mobile network. The unlock will not work over Wi-Fi. - Check that the requirements are met for:
- The device must not be reported lost or stolen, blocked, or restricted to T-Mobile
- The device must use the Device Unlock Application [Does not prompt for code with different sim]
- Your account must be in good standing and not be suspended or cancelled
- Clear the application cache. See your device > How tos > Apps > Clear & uninstall app.
- Check that the device memory is properly managed.
- Restart the device and try again.
- Rooting your device will disable the unlock application
- Download the latest T-Mobile software to continue
- Ensure the device has stable mobile signal
- Restart the device and try again
- No response is received from the server
- Try using an alternate internet connection
- Ensure that your device has sufficient memory
- Restart the device and try again
- No internet connection is available:
- Device is not connected to 3G/4G LTE
- A non T-Mobile SIM card is being used on a device that is locked to T-Mobile
- Update the app using the Play Store
- Attempt the unlock using the mobile network.
- The device is not eligible for unlock.
- See Unlock your mobile wireless device to determine what eligibility requirements are needed.
- System Maintenance is currently underway
- Wait and try again later
- The device must be connected to the mobile network (including domestic and international roaming)
- Disconnect from Wi-Fi and try again.
App requirements
Download
Only supported devices may download the app or have it pre-installed Supported devices may download the app from: Device Unlock - Android Apps on Google Play.
How to proceed device unlock after we completed order.
Choose the desired device unlock type:
Troubleshooting
If you receive an error, review the following table for troubleshooting:
Error Message | Information / Troubleshooting |
Device not recognized by your service provider. Please call customer care. | |
Data corrupted during transfer. Please try again. Error during data transfer. Please try again. | |
Server not responding. Please try again later. | |
Failure in processing the request. Please reboot device and try again. | |
No internet connection available. Please try again when internet connection is available. | |
Unable to connect to the server at this time. Please try back again later. | |
Unlock Failed: This mobile wireless device is not eligible for unlock. For Device Unlock eligibility details, please go online or contact Customer Care. | |
Unlock Failed : System maintenance error, try again later. | |
Failure in applying the unlock settings. Please try again. |
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