How to factory reset ZTC ZT678C? How to wipe all data in ZTC ZT678C? How to bypass screen lock in ZTC ZT678C? How to restore defaults in ZTC ZT678C?
The following tutorial shows all method of master reset ZTC ZT678C. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your ZTC ZT678C will be as new and your core will run faster.