Lenovo S930 6" HD IPS Quad-Core Dual Sim 3000mAh Unlocked Smartphone Cell Phone Lenovo S930 6" HD IPS Quad-Core Dual Sim 3000mAh Unlocked Smartphone Cell Phone CPU: MT6582 4-core 1.3GHz Memory: RAM 1GB , ROM 8GB Screen: 6.0 inches HD IPS 1280x720, 8 MP/ Auto Focus , LED flash Network: WCDMA /GSM , Android OS 4.2.2 , battery 3000 mAh Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.