One thing that has always bothered me is that Bluetooth is neutered in iOS. There are three examples that I can think of: 1) When playing audio via Bluetooth in my car, I do not see the album art that I normally would. (Works fine with USB) 2) Contact pictures are not transferred to my car with the rest of the contact information. My car has the option of displaying pictures for contacts, but the iPhone won't transfer them. 3) Most annoying, I can not respond to texts via Bluetooth! When i had a pebble, that was a minor annoyance (since it was available on Android.) But, now with my car having text reading and response, it is frustrating. Since the AppleWatch can do it (and, again, Android phones can support it), it has to be an artificial limitation. Before anyone say "Buy an Android then", these are mere annoyances, not something that is going to make me turn away from iPhone/iOS, but I wish Apple would open this up.