Samsung GT-i5801 Hard Reset.

1. Turn off your phone.
2. Press VOLUME UP + VOLUME DOWN + HOME.
3. And then pressed the POWER button.
    Wait until you see the android logo, then release all the buttons.
4. Select Wipe Data/Factory Reset, With VOLUME DOWN.
    Press HOME Button.

5. Select YES- Delete all user data, with VOLUME DOWN.
6. And then press HOME.
7. After format,press HOME again to reboot phone.(select reboot system now).

Note: All Data Will Be Lost.`

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