A Hard Reset reverts a phone to its original settings and a clean OS (Operating System) removing all data and information added to the cell phone by the mobile phone user. In essence a Hard Reset erases everything from the phone and puts the phone back to like new condition as though it’s brand new right out of the box.
1. First thing you should do to Hard Reset is turning your phone off, so please do that.
2. When your phone is turned off you have to press and hold both Volume down + HOME + Search buttons + POWER.
3. Once you did this there should apppear hard reset screen, similary looking like this:
4. Now, please choose wipe data/factory reset option, to navigate use volume buttons and to confirm press POWER button.
5. And it's done! Now you have to wait untill your LG F120L will finish reseting and you will be good to go.