Sony Ericsson XPERIA RAY hard reset

To perform Xperia Ray hard reset

Resetting the Xperia Ray phone

You can reset your phone to its original settings, with or without deleting all of your personal data. It is possible to reset the phone to the state it was in before you first turned it on. But before you perform a reset, make sure to back up any important data saved on your phone.
To reset the phone
press the Menu key
select Settings
scroll to and select Privacy
select  Factory Data Reset
select Reset Phone
select Erase Everything

the phone will then restart to complete the reset

A hard reset will reset your phone to factory default settings. All files and configurations that you have entered in the phone will be lost. After the hard reset the phone will reinstall Windows Mobile and the software included.
Note: Backup the files that you want to keep, before you perform a hard reset. You can backup files via a computer or a memory card.