As we discussed in class a couple of months ago, iPhone is not a phone. Rather, it is a sophisticated software application platform. Apple is extremely smart in helping its customers to jump over the abyss between mobile voice and mobile computing in two easy steps: (1) iPhone -> (2) iPhone 3G. Neither Windows Mobile, nor Android demonstrate the ability to move seamlessly between the two worlds. 

Here's an early review:

 

Speaking of the App Store, it's easily the best thing about the iPhone 3G—although it also happens to be available on the old iPhone via the firmware 2.0 update. I've already posted my impressions of the App Store, plus a handful of the more than 500 available applications (Gina has also posted some reviews), but I'll say it again—if you're looking for something new to get excited about in iPhoneland, this is it. The 3-D, accelerometer-enabled games like Super Monkey Ball look amazing on the iPhone, the TypePad blogging app lets you post thoughts and photos on the fly, Pandora delivers free, streaming music channels, and Loopt lets you keep track of your pals in real time—and that's just the tip of the iceberg.