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 have to switch off your device.
2. And nextly press and hold power button with volume down button.
3. Wait untill you will see LG logo on your screen and you can release the buttons.
4. Few seconds later your device will boot into Recovery Mode.
5. And that's it! you know now how to put you LG L Prime into Recovery mode.