message not delivered after IOS 6 upgrade
In mid-December I upgraded my iPhone4 to IOS 6. Since then I have been unable to send SMS text messages. I receive messages with no problem. I have read of some problems with iMessage, but this is a different problem. I have never used iMessage. I tried sending regular text messages with iMessage enabled, disabled and reenabled and it made no difference. When I try to send a text message I get a red exclamation point and the notation "Not Delivered"
Anybody else having this problem? Is there any solution?
I called my carrier (AT&T) and the tech checked everything on my account and verified that nothing has changed and my text messages should be working. She thought it was an iPhone problem.
iPhone 4, Windows XP, OS 4