How to factory reset VIVO Y31? How to wipe all data in VIVO Y31? How to bypass screen lock in VIVO Y31? How to restore defaults in VIVO Y31?
The following tutorial shows all method of master reset VIVO Y31. Check out how to accomplish hard reset by hardware keys and Android 5.1 Lollipop settings. As a result your VIVO Y31 will be as new and your MediaTek MT6580 core will run faster.