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 should release held keys when the Boot Mode appears.
4. Now select Recovery option. To do that, use Volume Up to navigate and Volume Down to confirm. Press the Power button.
5. Good job, you are in Recovery mode. Navigate it with Volume buttons; select options with Power button.