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. Now there should appear this menu:
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.
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.