... high-speed smart chip,MT6577-1.2GHZ Dual-core system,RAM:1G/512MB(Optional),5.5"QHD screen, ... Android 4.1.1 OS,WCDMA/GSM,four-bands , Mobile AP,wifi,GPS+AGPS,Light sensor,Gravity Sensor,Proximity ... 512MB(Optional) 3G [Compatible:Band 1+Band 2+Band 5](WCDMA/GSM)5.5"QHD high resolution touch screen(960 ... with the Android 4.0.9 OS GPS+AGPS global positioning navigation system 3G,WIFI 802.11b/g support,EDGE, ...