Hard Reset HUAWEI C8813D

First method:

1. Turn off your device.
   
2. Next press and hold Volume Up + Power button for about 15 seconds.
   
3. Afterwards you will see Android recovery menu.
   
4. Now from the menu select "Factory reset/wipe data" using Volume Down to scroll option, and press Power button to accept.
5. Navigate to option "Yes-detele all user data", and confirm that with Power button.
   
6. At the end press Power button to accept option "reboot system now".

Second method:

1. Switch on the device.
   
2. Then from the Home screen press Menu key.
   
3. Next choose Personal option -> Backup & reset -> Factory Data Reset -> Reset phone.
4. To confirm touch once again option Reset phone.
5. Confirm your choice by touching on Reset phone once again.
6. After that your phone will restore to the factory defaults settings.

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