Recovery, in Android, refers to the bootable partition, in which the recovery console is installed.
It contains tools to help repair your installations as well as install official OS updates by using a combination of key presses or instructions from a command line sometimes.
Android is open, meaning the recovery source code is available, so that building a customized ROM is relatively easy.
1. To get to Recovery mode you will have at start turn off your device.
2. Wait 10 seconds and press and hold power button and volume down button.
3. After you see LG logo on the screen you can let off the buttons.
4. And this is it, you are in recovery mode menu.
5. If you want to know how to navigate, then its Volume buttons for goinng up and down and Power button for selecting your choice.