How to factory reset ZTT W398B? How to wipe all data in ZTT W398B? How to bypass screen lock in ZTT W398B? How to restore defaults in ZTT W398B?
The following tutorial shows all method of master reset ZTT W398B. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your ZTT W398B will be as new and your core will run faster.