Soulyezer

I don’t remember if this worked but: disable Bluetooth, turn on hotspot on the phone and connect the watch to the hotspot, update from the watch.

And probably have a separate controller? I’m not very technical at all but I’d assume it’s much easier to fit a separate one on a large surface like the iPad has

Edit: google confirms the iPads have a separate USB3 controller

Or because the base iPhone 15 uses last year’s Pro chip which didn’t have a USB3 controller.

Gloves probably better, washing sometimes is not enough