Some contacts are getting message they are an unidentified caller

Hello kathyfrommountain city,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with Caller ID saying contacts are unidentified. When calls are not showing Caller ID or matching to existing Contacts. Caller ID is a carrier feature that can be disabled by the person placing the call. When that happens you will get a message "Unknown Caller" or "No Caller ID."

If this happens from specific callers, that could be expected behavior. If Caller ID is blocked, the iPhone will not be able to match it to an existing Contact. If this happens with every call, this is likely a carrier issue and you should escalate the issue with the Carrier, including request they re-provision the account.

We hope this helps.

Cheers!