I'm sure you'll have no problems finding iPhone content. I'll just pick this one, which tells a bit of the design story. http://www.time.com/time/nation/article/0,8599,1575410-1,00.html. Just goes to show, that, done well, the user experience starts long before you open the box.

I like the bit about arguing over every pixel. On one of my previous gigs they even had a term for it. "Oh, Shane's sub-pixellating again.". Imagine if I had dragged out a jeweler's loupe!