1. Hello. Please press the Power button to turn your phone off.
2. Now press & hold the Volume Up and Power button until a Boot Mode comes on screen.
3. You can release these buttons when the Boot Mode shows on screen. Enter Recovery Mode by pressing down the Power button.
4. Select Recovery Mode - scroll down using Volume Up button, confirm with Volume Down. Press Power button.
5. Good job, you are in Recovery mode. Navigate it with Volume buttons; select options with Power button.