Hard Reset O2 X4
- Make sure, that your phone is on.
- Browse to Menu -> Security Settings -> Reset Factory Default.
- Accept operation, and enter your password.
* The default password is: 1234.
- Choose from this 2 options: Restore Default Settings, or Delete All User Data.
Help! This doesn't work
Hard Reset will erase all of your data
All described operations you are doing at your own risk.