Why won't my Wi-Fi switch work?
The WiFi switch on my iPhone seems to be jammed. I can't switch it on in Settings. Any ideas about what could be causing this, and how to fix it?
iPhone 4S, iOS 6.0.1
Go to this Apple Support page.
http://support.apple.com/kb/TS1559
Go through the steps starting at the top and work down until you get a solution. If nothing works contact Apple.