I installed iOS 7 GM on my iPhone 4s and everything was working find until I switch my wallpaper to one of the Apple defaults, the red hue one, due for the pink iPhone 5c. I can't seem to get neither control center, notifications center, and slide to unlock to help me interact with my phone. Tried turning the phone off as well as restarting it by holding the power & home button for until it restarts. Is there anything I can to to troubleshoot this without loosing my info on the phone ?