How to factory reset TENGDA M55? How to wipe all data in TENGDA M55? How to bypass screen lock in TENGDA M55? How to restore defaults in TENGDA M55?
The following tutorial shows all methods of master reset TENGDA M55. Check out how to accomplish Hard Reset by hardware keys and Android 4.4 KitKat settings. As a result your TENGDA M55 will be as new and your MediaTek MT6582 cores will run faster.