You didn't mention audio.
I particularly love the feature where you can only listen to music by turning off "Do Not Disturb", because that way my morning walk is guaranteed to be interrupted by some random caller wanting to tell me that Bill Gates personally wants to give me money, rather than listening to the music I had queued up as I walked out the front door.
Oh, also, the predictive keyboard is brilliant, it forgets common words after about a week, so then you are forced to spend extra time typing the same thing again and again, which is great for finger dexterity training. Speaking of which, I absolutely love the autocorrect which changes words completely out of context, even if you spelled the word correctly, not to mention that adding an "s" to a long word to get a plural requires that you type the entire word.