1. Start by switching the phone off.
2. Next, press and hold Volume Up and Power for a few seconds.
3. When the phone vibrates, release Volume Down and press Volume Up key.
4. Release held keys when the Boot Mode appears.
5. Select the Recovery option by using Volume Up to scroll and Volume Down to confirm.
6. You're almost done... press Home button in order to enter the Recovery Mode.
7. You now should be in the Recovery mode.
8. Scroll the options there by using Volume buttons and confirm by using the Menu key.