Turn the Mobicel off
Press and hold the Volume down button and the Power button until you see the Mobicel log
Wait until you see the triangle with an exclamation mark inside
Tap the Home button (the Recovery Menu should now display)
Use the Volume down button to scoll and highlight "Wipe data/ factory reset"
Press Power button to select/confirm
Scroll to 'yes' using the Volume down button and confirm with the Power button
Wait until you see "wiping complete" at the bottom of the screen
Press the Power button to confirm or select 'reboot now'