Samsung Galaxy Core GT-I8262
- Turn off your mobile phone
- Press the volume + and on / off at once
- wait for approximately 5 seconds until the display on your mobile phone SAMSUNG
- Select wipe data / factory reset
- Select yes --- delete all data users
- Done for 2 times the data wipe process
- Reboot system now
- and tara tara tara finis heheh :p