Hard Reset ZTT P138

How to factory reset ZTT P138? How to wipe all data in ZTT P138? How to bypass screen lock in ZTT P138? How to restore defaults in ZTT P138?

The following tutorial shows all method of master reset ZTT P138. Check out how to accomplish hard reset by hardware keys and Vendor settings. As a result your ZTT P138 will be as new and your   core will run faster.

First method:

  1. Power off the phone.
  2. Next turn on the device.
    Hard Reset ZTT P138
  3. Choose emergency dial, and type this: *983*22387#
  4. Select from the menu Erase Everything.
  5. Well done!

Help! This doesn't work