Are we talking about the same thing when we say "mobile devices?" Like, Android phones? Because if there's something lobotomized about their virtual memory, that's something I'm curious about, if you could share a reference of some sort.

I don't know if Android swaps (almost certainly not) but iOS does not swap. It doesn't have a pager. Of course it does have "VM".

I dug into it a little. It's mostly for posterity at this point but if anyone wants to read about it, look up the Android lowmemory killer, which is sort of an enhancement to the OOM killer's functionality. It's a conventional enough Linux virtual memory otherwise.