At least 4-5 times a day, my iPhone 4s shuts itself down, if not more. The actual phone forced me to restore 2 days after I bought it, so I have already restored. It seems to freeze, fade to black and then restart itself. This happens completely randomly while I am in the middle of doing something. Also---I woke up one day and my camera app doesn't shoot or save pics (when shot from another camera app). PLEASE HELP. I really don't want to restore (agaaaaiiin) but I want to know if I need to go to the Apple store for a replacement....this phone is a piece of work.