How to factory reset ZTC ZT3688? How to wipe all data in ZTC ZT3688? How to bypass screen lock in ZTC ZT3688? How to restore defaults in ZTC ZT3688?
The following tutorial shows all method of master reset ZTC ZT3688. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your ZTC ZT3688 will be as new and your core will run faster.