The wireless industry is a notoriously tough nut to crack, and it’s become pretty clear that the first iPhone wasn’t about total domination so much as priming the market and making a good first impression with some very dissatisfied cellphone users. With the iPhone 3G, though, Apple’s playing for keeps. Not only is this iPhone’s Exchange enterprise support aiming straight for the heart of the business market, but the long-awaited 3rd party application support

