Upgraded my 4s to iOS9 and now I cannot make or receive telephone calls, help!
I Upgraded to iOS 9.0.2 on my iPhone 4s and now I cannot make or receive any calls. When I make a call, the phone attempts to call but then immediately ends the attempt. All incoming calls go directly to my voicemail. Is there a certain setting I need to switch "on" or "off" so that I can make/receive calls again?
iPhone 4S, iOS 9.0.2