Show caller ID and number on incoming call on iPhone? I looked around quite a bit for an answer to this question but can't find one, so maybe I'm overlooking something obvious.

I recently starting paying my carrier for caller ID. This is great sometimes, but now when receiving calls only the caller ID name is displayed, not the caller's phone number. I can't find any setting to get the caller ID name to display along with the phone number before I answer an incoming call. This is especially difficult when the caller ID text is UNKNOWN CALLER or something similar since I can't tell if the number looks familiar before I answer.

All of this applies to receiving calls from people not in my contacts list.

Is there some way to make callers' phone numbers appear along with caller ID text when receiving incoming calls?

This is an iPhone 6 Plus with iOS 9.3.1 on T-Mobile (US) in case any of that is relevant.
Unknown caller generally means their number (caller id) is private