Nokia N97 is a touch screen "mobile computer" in the Nseries of smartphones by Nokia, with a fold-out QWERTY keyboard. Announced on 2 December 2008, the N97 is Nokia's second touchscreen phone (after the Nokia 5800 XpressMusic) that is based on Symbian OS (S60 5th edition). The Nokia N97 was released in US flagship stores on 9 June 2009 and on 26th June 2009 was released worldwide. In September 2009 it was reported that two million N97 handsets had been sold in three months following its release.