Like Acer, number two computer company Dell is expected to unveil its long-rumored smartphone products at GSMA in Barcelona on February 16. According to Wall Street Journal reports, Dell has been working for over a year on Android and Windows Mobile devices and will have prototypes to show off at the convention, one of which is a touchphone, the other a slider of some sort. Details remain scant, but when Dell enters the smartphone business it will mean all of the US top five computer manufacturers will be represented in the mobile handset sector.