Hard Reset ZTE T82 Grand X LTE

1. Make sure, that your phone is off.
2. Now press and hold this buttons: Volume Down + Volume Up + Power key.
   
3. When you see a small white box with the letters, then press Menu key to see menu of Recovery mode.
4. Next from the menu choose "Wipe Data/Factory Reset", using Volume buttons to scroll to option, and Power button, to confirm operation.
5. Then select "yes", and confirm with Power button.
6. After that press Power button to enter option "reboot system now".
   

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