Are you experience any problems with your LG Optimus L9 II (LG D605)?
Safe Mode helps to determine if an app is causing your device to freeze. Safe Mode temporarily disables all apps that have been installed via Google Play. Performing this troubleshooting step is necessary to determine whether a 3rd party app is the cause of an OS or App issue. Safe Mode should always be performed prior to a hard (factory) reset.
To Access the safe mode on LG D605:
1. Press Power on Key
2. Long Press Volume Down Key from When you have see initial Screen with the logo
3. you can see Safe Mode ,after Phone Power On
How to turn off the safe mode. Power off and restart, You will turn off the safe mode on your device.