Hard Reset SONY Xperia SP C5303
See the Next method!
- Switch off the handset.
- Now navigate to Settings -> Backup & reset -> Factory Data Reset -> Reset Phone.
- Then choose option option "Erase everything", and confirm that.
Hard Reset SONY Xperia L C2105 - Reset All SONY Xperia
Help! This doesn't work
Hard Reset will erase all of your data
All described operations you are doing at your own risk.