The issue here is would you rather pay the premium for keeping access to your ATT phone number while roaming...
or pay for a local eSIM and the data for that in the country you would be in, which would be substantially cheaper, and use FaceTime Audio to make those calls back to the US. Options need to be judged here before looking at the convenience of simply keeping your number, which you would get back once you get back into the US.
BL.
Right, I understand there's a cost tradeoff with using AT&T's IDP. I'm just trying to figure out if iPhone 14/AT&T IDP users suddenly will have a lot fewer options when abroad — and maybe even no options in certain countries. Thanks.