Hard Reset TENGDA N9389

How to factory reset TENGDA N9389? How to wipe all data in TENGDA N9389? How to bypass screen lock in TENGDA N9389? How to restore defaults in TENGDA N9389?

The following tutorial shows all methods of master reset TENGDA N9389. Check out how to accomplish Hard Reset by hardware keys and Android 4.2 Jelly Bean settings. As a result your TENGDA N9389 will be as new and your MediaTek MT6589 cores will run faster.

How to hard reset TENGDA N9389

1. At the beginning switch off the device by holding the Power rocker.
2. Next, press and hold together the Volume Up and Power button for a few seconds.
3. You can release held keys when you see the Android Robot.
4. To enter the Recovery Mode hold down the Power key for a short while.
5. In this step use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.
6. Then choose "yes" from the menu, and accept it with Power key.
7. After a while accept option "reboot system now" by using Power rocker.
8. That's all. The hard reset operation should be completed.