1. Press Power button until the phone turns off.
2. Next, press and hold these buttons simultaneously: Volume Up & Power. Release them after the Boot Mode menu pops on-screen.
3. Release held keys when you see the Boot Mode in front of you.
4. Use Volume Up and Down buttons in order to enter Recovery Mode.
5. Press Power button in order to enter Recovery Mode. Press Volume Up button once.
6. Navigate Recovery Mode with Volume & Power buttons.