Each week Ross Rubin contributes Switched On, a column about consumer technology.
In the heyday of Palm organizers, when even the speeds of 3G data seemed like a distant fantasy, a debate raged as to whether the future of pocket devices could belong to one or two devices. Those who favored two devices argued that you didn't really want all the bulk and battery consumption of a pocket computer in a small device that you wanted to use primarily to make calls. They failed to anticipate that technology's relentless integration would enable these "pocket computers" to become the minimal-millimeter smartphones of today and that data networks would support access to apps ranging from social networking to mobile video that would trump voice for many users.


More...