iPhone Some Text Messages Suddenly Not Received
I have an iPhone 5 and my wife has an iPhone 4. Our text messages have been working fine for the last year, but all of a sudden about one month ago I started getting a "Not Delivered" error when I tried to text her. If I tap the "!" next to the error and tap "Send As Text Message", the message goes through.
She also knows of several other people who have sent her text messages and they seem to be delivered, but she is not receiving them. She does receive some text messages, just not all of them so it seems to be random.
Has anyone run into this?
Windows 7, iTunes 10