Recovery is included on a separate partition from the main Android OS on all Android devices.
You can boot directly into recovery mode and use it to factory reset the device, delete the cache partition, or apply software updates.
It can help you fix your device.
1. Getting to Recovery mode is relatively easy, start from turning off your device.
2. Wait few seconds and press and hold the power button with home and volume down buttons combined.
3. If you will see LG logo on the screen, let go off the buttons.
4. Now you should be seeing this recovery mode menu.
5. Congratulations! you reached the end of this guide.
6. If you would like to know how to go up then its "+" volume button and "-" for going down. Press power button to select your choice.