How to factory reset BLUBOO X550? How to wipe all data in BLUBOO X550? How to bypass screen lock in BLUBOO X550? How to restore defaults in BLUBOO X550?
The following tutorial shows all method of master reset BLUBOO X550. Check out how to accomplish hard reset by hardware keys and Android 5.1 Lollipop settings. As a result your BLUBOO X550 will be as new and your MediaTek MT6735P core will run faster.