SAMSUNG I9300 Galaxy S III

Hard Reset SAMSUNG I9300 Galaxy S III

First Step:-

1. Turn off your cell phone.
2. Press and hold Volume Up button + Home button and then press Power.
3. In Factory reset menu use Volume Down key to select "Wipe Data  Factory Reset" option and press Power key to confirm the operation.
4. Use Volume Down key again to select "Yes delete all user data" press Power key to confirm the operation.
5. After Hard Reset select "reboot mobile now" option.

Code method:-

1. Power on your device.
2. Open the dial pad on your phone and enter: *2767*3855#
3. Now your phone will reset and restart.

Other Method:-

1. Make sure, that your phone is on.
2. From the Home screen select Menu.
3. Now choose Settings -> Back up and reset -> Reset device -> Delete all.
4.  wait until your phone will reset and reboots.
5. Done.