I just got this iphone from a friend of mine who just upgraded to 4S and i noticed that the wifi isnt working now that i have updated it. It doesnt find any wifi addresses including the one I'm using right now to get on this site. If I go to Setting > General > About it has an address in the Wi-Fi address but its not connecting to anything and its not even finding any networks. Anyone have this happen to them or know how to fix it?