The factory reset of the LG G4 H815 or hard reset can be done either manually by pressing buttons or by software by doing the hard reset via the menu. You will note that when you do a reset much like other LG phones you will not be able to recover the data or files again once the reset had been done. You will do this at your own risk. You have been warned.
You are best advised to backup all your data as the reset will delete your data and you cannot recover this again. If you do not wish to backup your data before the hard reset then you are best served writing down all your passwords and settings such as your APN settings on your phone for your internet.
Note that the phone is easy to reset and most prefer to do this via the menu system instead of the manual way of resetting the phone. The menu system is explained below and this is eaiest to complete by most as it is self explanatory on the menu system.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.
Factory reset via Menu
Factory reset via Buttons