4.5" 2S 8GB Android Smartphone with Yapper Mobile World SIM Black. Simple is smart. Snap photos, play games, and download apps with a dynamic Quad-Core processor. Touch phones to share pics, music, movies and more with HotKnot technology. The NU2S does everything a smartphone should â?? without costing you a fortune. Includes factory installed Yapper Mobile World Sim with $20 Airtime Credit.