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 message appears on-screen.
3. Select Recovery using Volume Down and Up buttons.
4. Press hold Power button. Press Volume Up once.
5. You now should be in Recovery Mode. Navigate it using Volume buttons; select options with Power button.
6. You can use Volume buttons to scroll, and select options with Power button.