Find me one with an unlimited hotspot plan, and I'll switch tomorrow. Literally, that is what my smartphone offers. Not the hotspot, but unlimitted data plan and the means to use it to the fullest on the phone itself?
Close enough that this is my bar to meet, even though I would rather switch to a separate e-Ink tablet, dumb-phone-with-hotspot, and steam-deck-or-similar, for EDC-or-close-to; I would probably carry just the tablet and phone most days, maybe just the phone and deck on others.