after updating ios 8 to iphone 45s lost wifi and bluetooth how to fix
after updating ios 8 to iphone 45s lost wifi and bluetooth how to fix
iPhone 4S, iOS 8.1
Sounds like this is your problem:
iOS: Wi-Fi or Bluetooth settings grayed out or dim
One user reported that placing the iPod in the freezer fixed the problem.
Also heating sometimes works. See:
Why can't I select my wifi settings?
A trick that works frequently with iPhones:
Settings > AirPlane Mode ON, Do Not Disturb ON
Power down and wait 5-10 minutes
Power up
Settings > AirPlane Mode OFF, Do Not Disturb OFF
If not successful, an appointment at the Genius Bar of an Apple store is usually in order.