Zen Ultrafone 502 qHD Operating System: Android v4.2 (Jelly Bean); SIM Slot(s): Dual SIM, GSM+GSM; Network: 2G: Available; Colours: Black; Screen Size: 4.5 inches; Screen Resolution: 480 x 854 pixels; Pixel Density: 218 ppi; Display Type: TFT; Touch Scree...