... Dual-core system,5.0"WVGA screen,480 x 800 pixels,Equipped with the Android 4.0.4 OS,WCDMA/GSM,four-bands , Mobile AP,wifi,GPS ... /1900 sim card: Dual sim cards, dual standby Navigation: GPS+AGPS ... screen: Video records with sound Wireless transmission: 3G,WIFI 802.11b/g/n,Bluetooth 2.0,EDGE,HSDPA,HSUPA Modem features: Wireless AP ( Mobile ... (Unit:Hour) Phone book: 1000 Group SMS ... jack 3.5MM standard ...