My iPhone is displaying that it’s unable to verify this iPhones genuine display is that causing my phone to not receive some calls
What’s causing my phone to not get some incoming calls
iPhone 11, iOS 15
Doubtful that the screen causes the call problem. It would be all calls or none that fail.
Re the message, if you think it is not true because it IS the original screen you can reach out to Apple Support directly. Depending on your region, you may be able to reach them here: contact Apple Support