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 method 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  core will run faster.

First method:

  1. At the beginning switch off the device by holding the Power rocker.Hard Reset TENGDA N9389
  2. Next, press and hold together the Volume Up and Power button for a few seconds.HardReset TENGDA N9389
  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.Hard Reset TENGDA N9389
  5. In this step use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.Factory Reset TENGDA N9389
  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.Factory Reset TENGDA N9389
  8. That's all. The hard reset operation should be completed.

Help! This doesn't work