1. First of all, turn the device off by holding down the Power key.
2. Now press & hold the Volume Up + Power button for a while.
3. Release held buttons when the phone vibrates.
4. Press Volume Down to choose Recovery option. Confirm the choice with Power button.
5. Press and hold Power button as soon as the Android logo appears on screen.
6. As you hold the Power button, tap the Volume Up button once.
7. Done, you're in the Recovery Mode.
8. Scroll through the options using Volume buttons; select them with the Power button.