Read a book on my iPad and have my place, bookmark, notes, automatically show up my Mac. Same with movies and podcasts; they pick up from where I left even when I switch devices. AirPods work with all my devices without cumbersome unpair/re-pairing. Copy/paste across devices. The cloud-synced documents without even having to manually save them.
All of that and more, all so seamless, with no configuration required on my part beyond signing with my Apple ID once on each device. This makes a huge difference to me as a user and Apple aren't under threat from anyone on that side.
And iOS 10 supports custom VOIP in the dialer.
First of all, that Apple is the only one providing usable real-world solutions is simply not true. Secondly, it still doesn't invalidate my point. Even if Android works badly with third party products, Apple is often absolutely incompatible.
Disclaimer: I'm an iPhone user, mainly for security/privacy reasons.
No. As a user, Metal gave me games with better graphics than OpenGL would have — I don't know about Vulcan being viable at the time, or now, but I don't think it would be as efficient for Apple-specific hardware than Apple's own API.
> No Miracast support.
Irrelevant; I have AppleTV and AirPlay. Does Miracast allow, say games, to present their UI on the iPhone/iPad while showing the action on the TV, as two distinct displays?