Hard Reset TENGDA HD9800

How to factory reset TENGDA HD9800? How to wipe all data in TENGDA HD9800? How to bypass screen lock in TENGDA HD9800? How to restore defaults in TENGDA HD9800?

The following tutorial shows all method of master reset TENGDA HD9800. Check out how to accomplish hard reset by hardware keys and Android 4.2 Jelly Bean settings. As a result your TENGDA HD9800 will be as new and your MediaTek MT6592  core will run faster.

First method:

  1. The device must be turned off, so hold down the Power rocker for a while.Hard Reset TENGDA HD9800
  2. Afterwards press and hold together Volume Up and Power button for a few seconds.HardReset TENGDA HD9800
  3. You can release held keys when you see an Android Robot.
  4. To enter the Recovery Mode hold down the Power key for a short while.Hard Reset TENGDA HD9800
  5. In the next step use Volume buttons to select "wipe data/factory reset" and tap the Power button to confirm.Factory Reset TENGDA HD9800
  6. Afterwards choose "yes" from the menu, and accept it with Power button.
  7. After a while accept option "reboot system now" using Power rocker.Factory Reset TENGDA HD9800
  8. That's all. The hard reset operation should be completed.

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