... Android 4.1 Android 4.1 OS Smartphone Dual SIM cards / Unlocked and quad band for worldwide useNetwork support: GSM 850/900 ... 6577 1GHz Cortex A9 Dual Core+ SGX531 GPUOperation SystemAndroid 4.1.1RAM512MBROM4GB Storage ExternalSupport TF Card up to 32GBScreen5.3 ... Gaming, MS Office ,Gmail, Mail exchanger, etc.Additional Features3G, GPS,WIFI, Bluetooth, FM radio, UC Browser, Ebook, Email, Messaging, VPN ...