1. Hi. First of all, switch the phone off by holding down the Power button.
2. Now hold down the Power and Volume Down buttons.
3. Complete the operation by releasing those buttons upon seeing the Boot Mode menu on screen.
4. Select the Androird Recovery option.
5. Wait for an Android icon to appear on-screen. When it does, press the button in bottom right corner of the screen a few times.
6. You now are in Recovery Mode.
7. You scroll options by using Volume buttons and confirm by using the Power key.