The difference is this.
iOS devices boot in about 30 seconds - they don't give you progress reports or anything to tell you how long it will take to boot, just the logo and then it's on, all cylinders firing. It's a design decision which means you don't actually notice how long it's taking. The blackberry on the other hand has a progress bar which creeps along, giving a much longer perceived sense of time.
All phones need you to sign up for an account to get the best from them - the difference is that blackberry and android let you use the phone without one, whereas apple does not. Thus, the other two annoy users who haven't created an account with popups, whereas with Apple, you are never hassled because you have had to sign up to use it.
Cut and paste on BB is confusing - again, iOS is relatively simple (although not perfect) tap words > copy, tap empty space > paste
I'm not sycophantically promoting the iphone, but Apple understand that users want an easy to use phone. No hassling to do this or that, no 'launch pad' of apps which you then have to tap another icon on to get to all of your other apps, they are just all presented on the swipable screens. BB and Android both fail to 'get' this, still.