"There’s something new, something old and something borrowed, in there."

Of course, there is also "something blue": CSR BlueCore6-ROM Bluetooth chip.

The article talks a lot about hardware but does not hit the nail on the head for the popularity of the iPhone. The real reason is the OS. OS X, and yes the iPhone uses it is the bomb. I love my old powerbook with Tiger and look forward to a Mini-Mac with Leopard (10.5) as soon as Apple upgrades the intel GMA 950 graphics chip to the intel X31.