... phoneBlack white UMI X1S MTK6589 Quad Core 4.5" IPS Gorilla Glass Screen 1280*720P Android 4.1 8MP Camera GPS WIFI Smart ... : 2G: GSM 850/900/1800/1900 MHz3G: WCDMA 2100Mhz4. Screen: 4.5 inches, HD multi-touch screen, PX:1280×720, 1600k colors5 ... up to 64GB SIM Card & Standby:Dual sim card standbyScreen:4.5 inches, HD multi-touch screen, PX:1280×720, 1600k colors ...