Update Carrier settings once and again
Since I have updated to iOS 10 ans macOS Sierra everytime that I plug my iphone to my imac the Update you carrier settings dialog box appears. I click on Update Settings button and the Successful Update confirmation is shown, but if I unplug and replug iphone same message appears asking to update again.
iMac, macOS Sierra (10.12), iphone 6S with iOS 10.0.2