G4's upgrade version Jiayu G4S octa core, carrying MT6592,Octa Core ,1.7Ghz processor, 16GB ROM + 2GB RAM, Max supports external TF card 64GB. And equip with a 4.7 inch, IPS multi points corning Gorilla II OGS touch Screen, very great display . G4S also features Dual sim card standby (one Micro SIM Card), GSM/WCDMA network works very well, Dual Cameras(Front camera 3.0 Megapixels, Back camera 13.0 Megapixels with CMOS flashlight, auto focus), Stereo FM Radio, GPS(support A-GPS and voice navigation), Sensors, Ebook, wifi, Bluetooth, Multi-language, etc . It built-in 3000mAh rechargeable lithium battery, excellent battery life . Support international WCDMA 900/2100MHz network bands .