Hard Reset SAMSUNG I9300 Galaxy S III
- Make sure, that your phone is on.
- From the Home screen select Menu.
- Now choose Settings -> Back up and reset -> Reset device -> Delete all.
- Confirm all informations, and wait until your phone will reset and reboots.
Hard Reset SAMSUNG I9305 Galaxy S III LTE - How to wipe your phone
Help! This doesn't work
Hard Reset will erase all of your data
All described operations you are doing at your own risk.