While Wall Street types master the universe on their BlackBerries and geeks tinker with their Treos, urban hipsters, students and celebrities like Paris Hilton have flocked to the more laid-back T-Mobile Sidekick. First released in 2002, it was a combination cell phone and e-mail device that was easier to use than most handhelds because of a unique horizontal design that allowed maximum space for its keyboard.
The Sidekick II, unveiled last week and on sale this fall for $299, keeps the same basic shape but improves on the original in several ways, including a built-in digital camera with flash, a...