You can hard reset or factory rest your LG Optimus 2X SU660 mobile phone as shown below. Note however that you will need to backup your data before you reset your mobile phone. The rest process cannot be undone so it is best to ensure that if you wish to reuse the data such as your phone settings, phone book or your passwords on your phone then a backup would be needed.
If you need to reset your mobile phone then you can do a hard reset or factory reset on the LG Optimus F7 US780 mobile phone as listed below. You should backup your data before you start the reset process as it will delete all your data on your mobile phone. You will not be able to recover this data once the mobile phone has been hard reset.