Facing very tough competition from iOS, Android and Windows Phone 7 based smartphone's, Nokia has now came-up with three new models of cellphones and a brand new "SMART" mobile-os named "Symbian Belle".

The new jazzed-up mobile OS platform "Symbian Belle" features NFC sharing, pairing functionality to the table, a total of six home screens, live widgets supporting five different sizes, dynamic lock screen, and a pull-down task-bar cum notification menu.

Nokia also announced three new devices Nokia 700, 701 and 600 which will come pre-loaded with "Symbian belle" OS and top-of-the-class hardware specs - images and video of new mobile-os and phone models after the jump.