edit: Oops, I left out texting. Which phone for that?
edit: Oops, I left out texting. Which phone for that?
But I digress, excusing your bad form of answering a question with a question, I am interested in your opinion of the possible conundrum of the two phone idea.
The for all the smart stuff, Pixel 6 with GrapheneOS. You can confine various "classes" off apps to dedicated profiles, so they'll never know of each other, and you get a vastly improved security (multiple releases in the month) and significantly improved privacy.
For a serious answer then: Rather than segregating phone calling vs the rest, if you want to go to the hassle of maintaining multiple phones, I would put sensitive apps (i.e. bank apps) separated from the rest.
But ultimately it depends on which threat model you are trying to mitigate. Most people would worry about protecting their financial information. If you are worried about possible backslash from a fascist state, you shouldn't use normal phone calls at all and switch to a privacy app.
OTOH, a dedicated phone just to make phone calls makes sense if your threat model is your significant other.