Suddenly my iPhone 7 is showing call failed on both outgoing and incoming calls. The only way I can call someone is to FaceTime them. I can receive and send text messages. I have lived in the same service area for 3 years and have not had any problems. Verizon told me it was an Apple issue. I have spent 4 hours on the phone with Apple in the past 3 days doing various changes but it still has the same problem. Apple now says it must be a Verizon problem. This is very annoying!! Anyone suddenly having this same problem?