All Android phones come with built-in recovery mode that is separate from the original operating system.
The recovery mode is used to access different features of the phone without accessing the phone’s OS.
The main function of the recovery mode is to fix the phone while staying away from the faulty OS of the phone.
1. For a start of this process you will have to turn off your device.
2. Wait few seconds and press and hold combined buttons: volume down + power button.
3. As soon as you will see the LG logo on your screen you can release the buttons.
4. Then after a moment of waiting you should reach Recovery mode screen. Good job!
5. Navigation here is really easy, just use volume buttons for going up or down and select with power button.
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.