Co do wprowadzania iphona, sam Jobs o tym mówił, że najpierw na deskach kreślarskich powstał iPad, a potem stweirdzili że byłby z tego świetny telefon. W biografii Jobsa też o tych chyba wzmianka jest.

Cytuję ( http://www.intomobile.com/2010/06/02/which-came-first-ipad-or-iphone-turns-out-apple-ipad-was-first/ ):
According to Jobs, the Cupertino-based tech company was playing around with an idea for a glass, multitouch display. Once they had prototyped the display, Apple realized that it could dive head-first into the smartphone game. That move proved quite successful.“I’ll tell you a secret. It actually started with the tablet first,” said Jobs in the interview. “I had this idea about having a glass display, a multitouch display you could type on with your fingers. I asked our folks: could we come up with a multitouch display that we could type on? And six months later, they came back with this prototype display. And I gave it to one of our really brilliant UI guys and he called me back a few weeks later and had intertial scrolling working and I thought, ‘my God, we can build a phone with this!’ So we put the tablet on the shelf… and we went to work on the iPhone.”