Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!


    Galaxy Tab T489 hard reset

    Your device freezes or has fatal errors
    If your device freezes or hangs, you may need to close programs or reset
    the device to regain functionality. If your device is still responsive but a
    program is frozen, close the program using the task manager. If your device
    is frozen and unresponsive, press and hold [POWER ] for 8-10 seconds. The device
    will reboot automatically.
    If this does not solve the problem, perform a factory data reset. In Menu
    mode, select Settings → Privacy → Factory data reset → Reset Tablet→

    Samsung T849 Galaxy TAB hard reset with keys

    With the Samsung Galaxy TAB turned off, press and hold the VOLUME UP button, and then briefly press the POWER button.

    OR

    Note: If you see  "Downloading" on the screen with an Android shoveling you pressed the wrong Volume key. Remove and reinsert the battery and try again.

    T489 Factory Data Reset from MENU

    From this menu you can reset your tablet and sound settings to the factory default settings.
    1. From the Home screen, touch T-mobile Galaxy TAB hard reset ➔ Settings ➔ Privacy.
    2. Touch Factory data reset.
    This action erases all data from your tablet except current system software and bundled applications, or SD card files
    such as music or photos.
    3. Touch Reset Tablet.

     

    Mobile backup and restore

    1. From the Home screen, touch T-mobile Galaxy TAB hard reset➔ Settings ➔ Privacy.
    2. Touch Back up my settings. A checkmark indicates activation and your current savings are saved for future
    use.
    3. Touch Automatic restore when settings change and you want to restore to the previous settings. A checkmark
    indicates activation.

    Factory Data Reset

    From this menu you can reset your tablet and sound settings to
    the factory default settings.
    1. From the Home screen, touch T-mobile Galaxy TAB hard reset➔ Settings ➔ Privacy.
    2. Touch Factory data reset then touch Reset Tablet ➔ Erase
    everything.
    The tablet resets to the factory default settings automatically and when finished displays the Home screen.