1:Android 2.2.2 operation system 2:Built-in 3G,bluetooth,GPS 3: 3.8 inch, 5 mega pixels 4:Dual sim card, ... Dual standy Product Specs. Basic ParametersModel No.Hp381RemarksTypeSmart phone, music mobile ... clock, units converterG-sensorBuilt-in a Data Applications BluetoothBluetooth V2.1, support EDR and A2DP stereo Data serviceGPRS, EDGE, WCDMA ...