If you want to really get ahead of the curve, it's best to think of the iPhone as a miniature Mac with 3.5" screen.
My point is that the actual guts and technology will become close to indistinguishable. This has never been the case. It is still not the case. And Apple is the player who is effectively positioned to achieve it in the near term. Yes, it is amazing.
For those who don't want to take Chambo's word for it, maybe you will be more convinced by listening to the people who were actually involved in buiding the technology.
From a long but interesting Bloomberg Businessweek article about the intense individuals involved in innovating iMac, iPhone and iPod:
During that ascent, Forstall accumulated enemies, particularly during the long, arduous process of creating the iPhone. Around 2005, Jobs faced a crucial decision. Should he give the task of developing the device's software to the team that built the iPod, which wanted to build a Linux-based system? Or should he entrust the project to the engineers who had revitalized the software foundation of the Macintosh? In other words, should he shrink the Mac, which would be an epic feat of engineering, or enlarge the iPod? Jobs preferred the former option, since he would then have a mobile operating system he could customize for the many gizmos then on Apple's drawing board. Rather than pick an approach right away, however, Jobs pitted the teams against each other in a bake-off.
Forstall led the Mac-centric approach. He commanded a team of fewer than 15 engineers who went to work stripping down Apple's OS X operating system to see if it would work on a device with considerably less power and battery life than a regular computer. Leading the other group was Fadell, who helped create the iPod. Another boy wonder, Fadell in 2005 had become one of Apple's youngest-ever senior vice-presidents at 36. The competition, according to former Apple employees, turned explosive, with Fadell and Forstall arguing over talent, resources, attention, and credit. (Fadell declined to comment for this story.) (After publication, Fadell submitted a response. His comment can be found at the end of this story.)
Forstall's team managed to get their shrunken Mac system to work, and Jobs went with that software approach.
"I inherited the competitive iPhone OS project from Jon Rubenstein and Steve Sakoman when they left Apple. I quickly shuttered the project after assessing that a modified Mac OS was the right platform to build the iPhone upon. It was clear that to create the best smartphone product possible, we needed to leverage the decades of technology, tools and resources invested in Mac OS while avoiding the unnecessary competition of dueling projects."