My personal experience -- for what its worth.
I borrowed a friends Android phone, got a prepaid SIM card, and fired it up. I was lost and was confused. Nothing seemed intuitive. I used it for a few months or more and was never comfortable. That's the key word I think.
I then went to the local Apple store and while we were waiting for the phone to be brought out, he showed me a few things. He suggested get the free ebook about iPhone (which I did). He set things up for me. Basically held my hand through the first half hour or so. It was a wonderful experience and I've -- for the most part -- been comfortable with iOS ever since.
My main complaint with Apple on all devices is the lack of deep technical documentation. What, precisely, do each of the settings do? The ebook doesn't tell you. There is probably some developer documentation -- maybe? -- somewhere that is what I'm looking for but I haven't found it. And, very often, there are Easter eggs hidden around. That is true for all software these days and its sad.