Restore original settings Samsung Galaxy S2 GT-I9100G with hard keys.

  + Option 1:

- Press and hold Volume Up + Home button

- Still holding 2 key + hold Power key 2-3 seconds

- Release the Power button but keep the Volume Up key + key 2 Home

- Currently the Android menu system recovery <3e>

- Press the Volume keys to move, press the Home key to select wipe data / factory reset

   (Volum Up + Home + Power)

   + Option 2:

- If your phone loses power structure or crashes, you need to close programs or restore the original settings back to factory operations

- If your phone hangs fail to work, press and hold the Power button 8-10 seconds, then let go, the phone will reboot automatically,

- If this does not solve the problem, reinstall the manufacturer's data. In standby mode to open the application list and select: Settings> Privacy> Reset the manufacturer's data> reboot phone> Delete all

   + Option 3:

  - Enter * 2767 * 3855 #

Note: all your data including contacts, messages, ... will be lost, copy the necessary data on your behalf, through messages stored on your SIM or your computer before operation