Restart your device iPhone; I too am having issues, but only with wifi, and yes I wet my iPhone 4S by sitting in the sea on a beach, not realising it was in my pocket, perfect hot day so me and iPhone dried off on the hot sand, on a mini sunbed i made up, bless), all came back to life, with no issues, except wifi keeps dropping on and off, Bluetooth works fine, any help The issue is especially widespread on iPhone 4S devices but users having the iPhone 4 and iPhone 5 have also been known to experience the issue The reason behind iPhone WiFi switch not working The exact cause of iPhone WiFi switch being greyed out is not fully known but is welldocumented
Apple Iphone 4s No Wifi No Bluetooth Video Dailymotion
