Levy interviews Steve Jobs about iPhone.

"[Jobs] finally decided to deal with AT&T’s Cingular network. '[They] were willing to take a really big gamble on us. We decided what the phone is. We decided what software would be on the phone. And so we could make the product we wanted.' ... But it’s not like the walled garden has gone away. 'You don’t want your phone to be an open platform,' meaning that anyone can write applications for it and potentially gum up the provider's network, says Jobs... Still, since the iPhone runs a full version of OS X, the operating system of the Macintosh computer, it’s reasonable to expect the device to take advantage of that power by running lots of applications, even if Apple has to vet them to make sure they won’t compromise the integrity of the network."