Nokia has unveiled the first smartphone to run the MeeGo operating system: the Nokia N9. This new handset is all screen -- it has no home button. Its 3.9-inch Amoled screen is made from scratch-resistant curved glass, and the body was precision-machined from a single piece of polycarbonate. However, the N9's use of the MeeGo OS raises questions about its viability. Nokia has already all but dropped work on the MeeGo platform. "Nokia has said Windows is their platform moving forward," Will Stofega, a program director at IDC, pointed out.