Earlier quoted context omitted.
Didn't the US decide to use different frequencies to everyone else?
Plenty of models that can work with all frequencies, so I am not sure if that's enough of a justification. Anyway, your point reminds me that the my "dream smartphone" would be one with no cellular connectivity at all. I'm still waiting for some company to start producing a keychain-sized 4G (or 5G) hotspot with an eSIM, which (I hope) would lead to more people asking for the return of the iPod Touch and for somethin…
You mean a PDA (https://en.wikipedia.org/wiki/Personal_digital_assistant)? Modern smartphones are basically a PDA with cellular connectivity (this is more obvious with early smartphones like the Treo 650), so if you take out the cellular connectivity, what you have is once again a PDA.