Q: Iphone 6 Won't make or receive calls

Did you check for a Carrier Settings Update ?

Is your SIM card working? If you get an alert about the SIM card in your iPhone

Since yesterday, I have the same problem with my iPhone 6 (updated to 9.2.1)

Internet works and I cannot make o receive calls

I have restaured the phone but still, no calls

I have checked my SIM with other terminal and works without problems, so it has to be the iphone