... 2.MTK6573 680MHZ 5'' DUAL SIM 3G ANDROID TABLET PHONE CAPACITIVE CELL PHONE operating systemAndroid 2.3.6FrequencyGSM850/GSM900/DCS1800/PCS1900 quand ... to uclock,incoming call turm-to-mute,wallpaper changeMemroyInternal memory:1G+2G,Support TF card(expanded to maximum 16GB) ... recording,WAP,redio play,Bluetooth function, GPRS download,MMS,memory expansion,E-book,incoming call firewall ,dual card,dual ...