Having just got an iPhone 6s after using Android for three years (used iOS before that) and still having my Android to compare to it (Moto G4 Plus, running essentially stock Android but I've used tonnes and tonnes of Android phones, ranging from the Samsung Galaxy S7, down to the OnePlus X, so I like to think I have a pretty good idea):
On iOS things just get supported better. For example, EE WiFi Calling and VoLTE are both supported on all the iPhones going back to the 6, so if you upgrade you'll have both those features. There is not one Android phone right now that supports VoLTE on EE and WiFi Calling and that is running the newest version of Android.
Some of the apps on iOS seem to be ever so slightly better designed, e.g. Spotify. It's a lot smoother transitioning between the "Now Playing" view and the Song/Album/Artist views.
Speed wise, I'd say iOS and Android are pretty much on-par. The Moto G4 Plus is as fast as the iPhone in day to day use. The iPhone drops frames occasionally, as does the Moto G4 Plus.
On iOS things just get supported better. For example, EE WiFi Calling and VoLTE are both supported on all the iPhones going back to the 6, so if you upgrade you'll have both those features. There is not one Android phone right now that supports VoLTE on EE and WiFi Calling and that is running the newest version of Android.
Some of the apps on iOS seem to be ever so slightly better designed, e.g. Spotify. It's a lot smoother transitioning between the "Now Playing" view and the Song/Album/Artist views.
Speed wise, I'd say iOS and Android are pretty much on-par. The Moto G4 Plus is as fast as the iPhone in day to day use. The iPhone drops frames occasionally, as does the Moto G4 Plus.





I wouldn't be surprised to see them doing the same next year though. Especially if Apple's move allows more DRM, which the music and movie industries will be demanding Android OEMs to replicate on USB C.