My Iphone 4S's Wifi button turn grey and i can't click it. I tried restarting the phone, resetting everything but it doesn't seems to work. This happen ever since i updated to the new iOS 6.0.1. Please get back to me ASAP. I need to use the WIFI.
Try this http://support.apple.com/kb/TS1559 support document. You might also want to look at this one http://support.apple.com/kb/TS1398
Retrieving data ...