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.!


    Samsung I5800 Galaxy 3 hard reset with buttons

    Press MIDDLE of the VOLUME + MENU(middle key) + POWER ON for 1-2 sec. Release Power. Recovery menu appears.
    Select Wipe Data/ Factory reset with volume down, then press MENU, then select Yes - delete all user... press MENU or POWER button to hard reset i5800 Galaxy 3 battery must be fully 100% charged.
    hard reset i5800 Galaxy 3
    DOWNLOADING  = Volume down + MENU + POWER. Release POWER after 1-2 sec

    Samsung i5800 Galaxy 3 hard reset

    VOLUME UP + MENU + POWER = FORCED UPLOADING by KEY pressing

    Samsung i5800 Galaxy 3 hard reset

    OR

    Use this method to hard reset your Samsung I5800 Galaxy 3 Android phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.

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