Especially when many of them are poorly implemented one-offs on one model on one carrier for a few months before support and updates are cut off permanently. (Why the hell should something like screen sharing be a feature of one particular model?!?)
In terms of actually working, the iPhone is lightyears ahead of huge swaths of the Android ecosystem. Maybe not Google Nexus, but then you're locked into the inferior network coverage of AT&T or T-Mobile.