Hard Reset HUAWEI Premia 4G M931

First method:

1. Startup the mobile phone Power button.
   
2. Then hold and press Volume Up + Power button (or Volume Up + Volume Down + Power button) until you see Android logo on your screen.
   
3. Select using Volume buttons option "wipe data/factory reset", and confirm that with Power button.
4. Choose "yes" from the menu, and accept it with Power button.
5. Now accept option "reboot system now".
6. That's all.

Second method:

1. Power on your device.
   
2. Next goto Settings -> Advanced settings -> Security -> Phone and SIM card and select option Reset your phone to the factory settings.
3. Then enter your password to confirm operation.
   * The default password is: 0000
4. Now wait to finish operation.
5. Good job!

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.