How to factory reset TENGDA Z4? How to wipe all data in TENGDA Z4? How to bypass screen lock in TENGDA Z4? How to restore defaults in TENGDA Z4?
The following tutorial shows all method of master reset TENGDA Z4. Check out how to accomplish hard reset by hardware keys and Android 4.4 KitKat settings. As a result your TENGDA Z4 will be as new and your MediaTek MT6572W core will run faster.