... mobile phone jiayu g4 * Android 4.2, MTK6589 Quad Core 1.2GHz * 4.7 Inch HD IPS Touch Screen,1280x720 ... MP+Back 8.0 MP Dual Cameras* WIFI+GPS+Bluetooth+Gravity Sensor, Proximity Sensor, Light Sensor, Magnetic sensor* Multilanguage Phone ModelJiayu ... 1900MHz3G: WCDMA 2100MHzSim CardDual sim card standbyOSAndroid 4.2CPUMTK6589 Quad Core 1.2GHzROM&RAM4GB ROM + 1GB RAMMemory ExtendSupport TF card ...