3G promised us the mobile Internet but, as ever, the hype got ahead of reality. To be fair, by the time that 3G was finally agreed upon and rolled out, the speeds it offered seemed rather pedestrian, and most industry watchers are now waiting on a 4G world for a truly global, mobile Internet with access speeds capable of supporting the kinds of applications and services that the iPhone is letting us glimpse. And that might happen faster than we think. The 1.5 billion app downloads on iPhone –...