[ipython]

Yes. Now tell me how I can determine the stir/shaken attestation level of a given incoming call to my iPhone before I answer it.

(The answer in my experience is: you can’t, and next, nobody knows what the different attestation levels mean, and many legit calls still come in without any attestation)

It’s like if browsers only told you that https was enabled after you POSTed your credit card number to the remote site.