1. The devices that once ruled the mobile market
With everyone trying to copy the iPhone's gesture-based interface and mix of messaging, applications and Internet, it's hard to believe there was a time the iPhone and its wannabes didn't exist. But in fact, before the iPhone's 2007 debut, mobile technology was defined by several different makes and models. Here's a tour of the key mobile devices that gained mass appeal and redefined the mobile market in their own times.