1. Hello. Please press the Power button to turn your phone on.
2. Now press & hold the Volume Up + Down + Power button for a few seconds.
3. Release held buttons after a menu shows on screen.
4. Enter Android System Recovery by pressing Volume Up button and then holding down Power button.
5. Press & hold the Power button
6. Congrats, you have entered Recovery mode. Navigate it by using Volume buttons; press Back button + Menu to select options.