1. Turn off the phone by holding down the Power button.
2. Now press + hold Volume Up + Power buttons. Release them when the Boot Mode opens up.
3. Scroll down to and select Recovery using Volume Up & Down buttons.
4. Now press and hold Power button.
5. While holding it, press Volume Up once.
6. Congrats, you are now in Recovery Mode. Navigate it using Volume buttons; select options using Power button.