How to Activate Service on a New Device
I had an iPhone 5S and a iPhone 4 before that). I just got thr iPhone 6, but for some reason, even thoguh I shut down my iPhone 5S fully before turning on and backing up from iCloud my new iPhone 6..... the new iPhone 6 is not 'registering" my phone number?
It just shows "No Service" in upper left corner.
[Subject edited for better exposure]