1. Turn off the phone by holding own the Power button.
2. Press-hold both Volume buttons for three seconds. Press and release Power button.
3. Select the Recovery option. Use Volume Down to navigate to the option and Volume Up to select it.
4. Android logo will appear on-screen. When it does, press and hold Volume Up. As you hold it, press and release Power button. Yes, like before.
5. Good job, you now are in Recovery Mode.