Apple iPhone 4S 8 GB Unlocked, White GSM 850 / 900 / 1800 / 1900, 3G Network: HSDPA 850 / 900 / 1700 / 1900 / 2100 3.5" LED-backlit IPS LCDMulti-Touchscreen w/ Protective Corning Gorilla Glass and Oleophobic Coating iOS 6 (upgradable), Dual-Core 1 GHz Cortex-A9 Processor, Chipset: Apple A5, PowerVR SGX543MP2 Graphics 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus, LED Flash + Front-Facing VGA Camera, 480p@30fps, videocalling over Wi-Fi and 3G + Video 1080p@30fps, video stabilization, Internal Memory: 8GB storage, 512 MB RAM, 1500 mAH Battery 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.