How to factory reset UMI Hammer S? How to wipe all data in UMI Hammer S? How to bypass screen lock in UMI Hammer S? How to restore defaults in UMI Hammer S?
The following tutorial shows all method of master reset UMI Hammer S. Check out how to accomplish hard reset by hardware keys and Android 5.1 Lollipop settings. As a result your UMI Hammer S will be as new and your MediaTek MT6735 core will run faster.