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. For a start take your phone and hold down your power button to shut it down.
2. Second thing we have to do press and hold the Volume down key + Power key with your hand.
3. When you will see LG logo on your screen you can release those buttons.
4. Now there should appear this menu:
5. To switch between option use volume keys and to proceed use power button on wipe data/factory reset.
6. And now your phone will restart itself so please wait patiently. Good job!
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.