What does restoring to factory setting mean
I am having a problem with my previously ulocked iPhone 4 - while downloading/installing an iOS 6.1 update, the phone froze with a USB-cord-to-iTunes picture. The only solution the iTunes is offering is to restore it to the factory settings. I am not sure if that will even help, but if it does - what would I lose by going back to the factory settings? Better yet, how can I get the phone back to life? Thanks
iPhone 4, iOS 6.1