If you wish to hard reset the LG Optimus F7 US780 then you can follow the instruction listed below. Note that once you have reset the phone back to its factory settings that all the data is lost including your phone book as well as you internet settings. You should backup all your data before you do a hard reset as you cannot recover the data later again.
There are two methods to do a reset on the LG Optimus F7 US780. The hard reset can be done via code or you can do it via pressing the buttons in a certain sequence. The hard reset will not only delete all the data but also all your settings. People normally do this when they are going to sell the phone or which to clear old data and settings from a second hand mobile phone which they bought. These settings are below. See how the factory reset of other LG mobile phones.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.
Factory reset via Menu
There will be an option to erase everything on the phone as well as everything including the microSD card. If you wish to keep your microSD card then it is best to remove this before the process.
Factory reset via Buttons