You either love or hate the iphone. I am of the mind set that I love it with an envy type love. I would own one if it would work with Exchange. I know, pure iphone lovers will tell me that there are work arounds. But, I rely too much on my calendar and contacts to give up my somewhat trusty Samsung Blackjack.
There is a great article on how Apple used the iphone to help change the wireless world. And I agree. They took a product that everyone uses, made it cool, sleak, and easy to use. And then got a provider to work with them. What a great business decision.
http://www.wired.com/gadgets/wireless/magazine/16-02/ff_iphone