LG C555 hard resetUsing Hard Reset LG Optimus Chat (Factory Reset)
If it does not restore to the original condition, use Hard Reset to initialise your phone.
If user turns on the phone with pressing and holding Power + CALL + Volume Down key at the same time
(for 10 seconds), the phone will turn on and perform hard reset immediately.
Please note, after you perform Hard Reset, all your data and applications on your phone will be erased and cannot be reversed.
If you perform Hard Reset, all user applications and user data will be deleted. Please remember to back up any important data before
performing Hard Reset.
Settings > Privacy
< Personal data >
Factory data reset – Erases all of your personal data from internal phone storage.