Hard reset LG Optimus Pro C660 full resetUse Hard Reset to initialise your phone.
When the phone is turned off, Press and hold Home key + Volume down key + Power key for over 10 seconds. When screen
shows LG logo, release power key.
After screen shows hard reset screen, release other keys.
Leave you phone over a minute while it performs hard reset, then your phone will be turned on.
Caution: If you perform a Hard reset, all user applications and user data are deleted. This cannot be reversed. Remember to back
up any important data before performing a LG C660 MFL67300803 hard reset.