... 2. MTK6577 Cortex-A9 Dual-core 1.2GHz 3. Android OS, v4.1 N9550/N7100 smart phone 5.3 Inch Capacity Screen mtk6577 dual core 1.0GHz android 4.1 1,One SIM ... fourth-generation high-speed smart chip,MT6577-1.2GHZ Dual-core system,3,Equipped with the Android 4.1.1 OS,WCDMA/GSM,four-bands , 4, 5 ...