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 turn off your phone first.
2. After fwe seconds you will have to press and hold power button combined with volume down button.
3. Now when you are seeing this LG logo on your screen you can let go off the buttons.
4. And now you should be in recovery mode screen.
5. Congratulations! you know now how to get to recovery mode on your LG F100L.