Frequecy:"UMTS/HSDPA (850,1900,2100 MHz) GSM/GPRS/EDGE (850, 900,1800, 1900 MHz )" Function:Bluetooth. WIFI. ... ,512MB+512MBOSAndroid 2.3 SystemFrequencyUMTS/HSDPA (850,1900,2100 MHz) GSM/GPRS/EDGE (850, 900,1800, 1900 MHz )Dual SIM cardWCDMA ... + GSM with Mobile functionSizeDimension191.5*121*12.5mmDisplayType7.0 WQVGA(16: ...