How to factory reset GIONEE GN638? How to wipe all data in GIONEE GN638? How to bypass screen lock in GIONEE GN638? How to restore defaults in GIONEE GN638?
The following tutorial shows all method of master reset GIONEE GN638. Check out how to accomplish Hard Reset by hardware keys and Vendor settings. As a result your GIONEE GN638 will be as new and your core will run faster.