How to factory reset HANTEL HT639? How to wipe all data in HANTEL HT639? How to bypass screen lock in HANTEL HT639? How to restore defaults in HANTEL HT639?
The following tutorial shows all method of master reset HANTEL HT639. Check out how to accomplish Hard Reset by hardware keys and Vendor settings. As a result your HANTEL HT639 will be as new and your core will run faster.