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I would not say that this is "how apple works." Apple innovates very well. The iPhone won not because it had an abstract "pristine sheen", it was just a better phone that innovated in the right ways: Maps worked great, Safari was a full browser in the phone, and other features. It's software keyboard worked well and enabled a large screen for capacitive touch and multimedia. iPhone 1 had a plentitude of new features.…
I really doubt we'll see a hardware back button on iOS. That is a misfeature of Android because of its inconsistent behavior -- if you came to one activity from an activity in another app, how do you go to the parent view in the current app? The back button takes you to the activity from which you came, not to the parent view. I think most iOS users are fine with how back works in iOS; personally I would be very much…
Generally, if I come to an activity from another app, it's to do one specific thing and then I want to go back to the original app. There are certainly cases when I want to stay in the app I got sent to and then hit back and find myself in the original app. The path then to the app I want is the same as always: home button, app shortcut.
Conversely, on iOS, what happens when I get sent to a different app and then want to go back to the original app? Home button, app shortcut. In my experience, the android way addresses the more common scenario.
Also, there are builds of android (HTC's Sense UI, I believe) that do have notifications on the lock screen. Not only that, but the lock screen is configurable, so you can add shortcuts that, when you drag them to the unlock field, take you directly to the app. This is a neat feature that I hope eventually makes it into android proper.
EDIT: Hm, this is factual and fairly uncontroversial. I suppose getting downvoted sometimes is just an inevitable consequence of participating in any dicussion involving iOS and Android? Oh well.