Hard reset or format LG Optimus L9 II D605 to reset mobile its factory default settings. Some time we set screen pattern lock before adding Google account. Google account is use full if we forgot pattern lock and want to reset pattern lock without losing mobile data and all installed apps. We can reset pattern lock with google account without formatting mobile phone. If we have not add google account then hard reset or formatting mobile is easy method. But in this method all installed apps and mobile numbers, messages are deleted. So take backup before hard reset LG Optimus L9 II D605 to its default settings.
Here is simple trick to reset LG Optimus L9 II D605 with in a minute. Charge mobile battery before unlock pattern lock.
How To Remove Screen Pattern Lock On LG Optimus L9 II D605
Turn off mobile.
Press and hold Volume Down and Power keys together.
Reset menu will appear press power to reset.
Press power key again to confirm.