Reset: T-Mobile Prism

    Learn how to wipe or master reset the T-Mobile Prism through the menu or hardware keys. Find out more on this page.

     

    Cache partition

    Master reset

    Safe mode

     

     

    Cache partition

    Wipe cache partition

    If the phone is not working correctly, you may need to master reset it and also clear the cache partition. These two resets clear different parts of the phone storage. Unlike a master reset, wiping the cache partition does not delete your personal data.

     

    To wipe the cache partition, follow these steps:

     

    1. Power off the device.
    2. While pressing the Power key, simultaneously press the Volume Up key.
    3. Continue to press the keys past the T-Mobile splash screen.
    4. Release all keys when the Android system recovery  screen appears.
    5. Press the Volume Down key to highlight Wipe cache partition.
    6. Press the Power key to select.
    7. Once the device shows Cache wipe complete, Press the Power key to select Reboot System Now.
    8. The phone will automatically restart.

     

     

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    Master reset

    Master reset from settings menu

    A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloaded content, ringtones, images, apps, and contacts. It does not delete data stored on the SIM card or SD card.

     

    To perform a master reset, follow these steps:

     

    1. Back up all data on the internal memory. See: Backup & restore.
    2. From any Home screen, tap the Menu key.
    3. Tap Settings.
    4. Tap Privacy.
    5. Tap Factory data reset.
    6. Tap to check Erase SD card.
    7. Tap Reset phone.
    8. Tap Erase everything.

     

     

    Master reset with hardware keys

    A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloaded content, ringtones, images, apps, and contacts. It does not delete data stored on the SIM card or SD card.

     

    If the device menus are frozen or unresponsive, you can master reset using hardware keys. To perform a master reset, follow these steps:

     

    1. Back up all data on the internal memory. See: Backup & restore.
    2. While pressing the Power key, simultaneously press the Volume Up key.
    3. Continue to press the keys past the T-Mobile splash screen.
    4. Release all keys when the Android system recovery  screen appears.
    5. Press the Volume Down key to highlight Wipe data/Factory Reset.
    6. Press the Power key to select.
    7. Press the Volume Down key to highlight Yes -- delete all user data.
    8. Press the Power key to select.
    9. The unpacking Android screen appears, and once complete with the reset, the Android system recovery screen reappears.
    10. Press the Volume Down key to hightlight reboot system now.
    11. Press the Power key to select.
    12. The phone will automatically restart.

     

     

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    Safe mode

    Turn on and use safe mode

    Safe mode allows you to turn on the device with third-party apps disabled. Then you can easily remove all apps that may be causing a conflict or software problem.

     

    To turn on safe mode and use it to fix app problems, follow these steps:

     

    1. Remove the battery from the phone.
    2. Re-insert the battery.
    3. Press and hold the Menu key.
    4. While holding the Menu key, turn on the device.
    5. When you see the lock screen, you can release the Menu key.
      'Safe mode' displays in the lower-left corner.

      30911-safe22.png
    6. Uninstall any third-party apps that gave you problems.

     

     

    Turn off safe mode

    To turn off safe mode, follow these steps:

     

    1. Press and hold the Power key.
    2. Touch Power off.
    3. Remove the battery.
    4. Re-insert the battery.
    5. Press the Power key to turn on the device, but do not touch any keys during the restart.
      Note: If this does not work, see: Cannot turn off Safe mode: Android

     

     

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