I have a landline when I set the call forward on the landline to call my iPhone 13. The incoming call either gets a message that the Verizon customer is unavailable or goes to an automated
answering service. I have tested the landline by setting to another landline and someone else’s cell and it worked
properly. Seems to be only a problem with the two iPhone 13 on my account. Have called tech support with Verizon twice and still having problems
