Doesn't Android allow sandboxed MDMs to be added to the phone? I've seen this when using Island, which basically creates a fake work profile on the phone which is completely separated from your personal profile. For dual apps like a second WhatsApp it worked well, to the point that sharing photos from the second account was a pain because it couldn't see the main file system. And when you don't want it anymore, that whole sandbox can be burned without touching the rest of the phone.

It'd be nice if iPhones had something similar. Not sure how anyone is supposed to use them for work when it comes to apps like WhatsApp and Signal. Or even less work stuff like dealing with recruiters, real estate agents and online dating where you might end up sharing primary contact details with people you don't want to hear from a few weeks later.