In the early 2000s, tech giants saw the future of mobiles to be handheld computers. At the time, the craze was all about having a fully functional Qwerty keyboard, some sort of a mouse or curser whether that be with some sort of trackpad or stylus to move your pointer across the screen as well as an operating system that was very similar to that of a full-size desktop PC, with Microsoft Windows being the benchmark.
This went so far as maybe companies actually putting these devices on the market under their own category: Ultra-Mobile Personal Computers (UMPC).
Sony was one of the first companies to release a UMPC with their Vaio VGN-UX280P and was actually very impressive.
However, a year later, Apple released the iPhone and that sent all PDA's, Mobile PC's, Blackberry's and business phones alike to the grave, and unfortunately, the UMPC suffered the same fate right after its initial launch.
Take a look at the video below by the YouTube channel: The Science Elf on Sony's Handheld PC From 2006...