[xp84]

You could make a decent case for an iPad with cellular being the "correct" device for this for an Apple user, since you should be able to just treat it as "your phone" with some kind of VoIP workaround, but also as "your computer."

[lmm]

IMO that's the worst of both worlds - too big to comfortably make calls on but also doesn't have a keyboard to write on. You can carry an external keyboard but that actually ends up being fiddlier to pack than a conventional laptop.

[xp84]

You're not wrong. I can't imagine not having a real computer personally, and the iPad + keyboard solutions are basically a construction kit for a terrible laptop which costs 1.2x what a good laptop costs.

I don't think I'd be annoyed making calls with a tablet though. I'd just use bluetooth. For me the challenge would be that having no phone would mean I'd have to carry something bulkier everywhere. So, in conclusion, I have no great ideas and I'd be forced to do phone + light laptop.