Sit back and relax while we take you on a tour of the new BlackBerry 8300's OS, aptly named 4.2.2. New features -- which were reported here -- include built-in Spell Check, Full Screen Mode while playing videos, creating and managing custom folders, and much more. The camera application has an amazing light sensor that will gage the surrounding light and turn on the flash or not (much improved from the Pearl). The speakers for playing audio and video are extremely loud, yet still manage to sound pretty full. Let's not forget the keyboard of the 8300 which is probably the biggest improvement overall. Click on for the full OS walkthough!