[bonyt]

> 1. surely unconditionally rebooting locked iPhones every 3 days would cause issues in certain legit use cases?

I wonder if this explains why the older iPhone I keep mounted to my monitor to use as a webcam keeps refusing to be a webcam so often lately and needing me to unlock it with my password...

[athrun]

I have the same setup and what works for me is putting the phone into Supervised mode using the Apple Configurator.

From there, you can enable single app mode to lock it into the app you're using for the webcam (I use Camo).