... Description i9B 3G 16GBquad band mobile phone ,quad band cell phone- Operating Frequency: Quad-band 850/900/1800/1900 GSM - ... hours (depending on network state) - Support Service Area: worldwide - Quad-Band - GSM GPRS 850 / 900 / 1800/1900 MHz Provider ... Effect Setting: Normal, Grayscale, Sepia, Sepia Green, Sepia Blue, Color Invert, Gray Invert, Blackboard, Whiteboard, Copper Carving, Blue Carving, ...