For the iPhone 2G it is rumored that Apple gets a monthly kickback from AT&T.
For the iPhone 3G it is rumored that Apple gets over $200 upfront from AT&T and nothing after that.
But as someone else pointed out, if you make money on the razor and the blades it's not the Gillette business model.
But as someone else pointed out, if you make money on the razor and the blades it's not the Gillette business model.