Doing a factory reset has some advantages for a few purposes.
One of the big ones is wanting to remove all Data from the device.
This is handy if you plan on giving the device to someone else and don't want to give them your contacts or any other information.
In some circumstances it can even be handy to just start over especially if you have some minor issues and you assume the issues are Data related.
If rooted its a great way to wipe the Data and Cache area's to prepare to change the ROM of the device.
1. First thing you got to do to start the process is turning off your phone.
2. Then you will have to wait few seconds and press and hold power button with volume down button together.
3. Now when you see LG logo, release the keys before the logo disapears.
4. Once you did this there should apppear hard reset screen, similary looking like this:
5. Now use your volume keys to navigate to wipe data/factory reset option and select it with power button to finish the process.
6. And this is it! You have reached your destination.
Despite the focus on the hardware issues, just like with the factory reset, this process is pretty invasive.
Since hardware and software work hand in hand, the action will still erase all the data stored on your smartphone.
Apps will also be uninstalled and settings will once again require a detailed restore and personalization.