> I can't imagine trying to do that on an iPhone. Surely it's useless.

When there's a will you'll be glad there's a way.

People used to make do with "tiny" screens throughout the 1980s and 1990s: Bigger displays sure but smaller resolutions Han the iPhone. Doom came out in 320x200 ffs

When traveling I've had to do all sorts of tricks to use various services while away from home. Like my bank app which set an OTP to email or SMS, but if you swiped out of the app to go check the message, it would generate a new OTP when you switched back to the bank app. So I had to check my mail/messages on the minuscule Apple Watch screen. And that was the only time I ever used email on the Watch but I was infinitely glad that it had that option.