HTC 8X 16GB Windows 8 Smartphone w/ 8MP Camera (Blue) 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus, LED Flash + Front-Facing 2.1 Megapixel Camera + Video Internal Memory: 8GB storage, 1GB RAM, Wi-Fi 802.11 a/b/g/n, Bluetooth: v3.1 Microsoft Windows Phone 8 (upgradeable to WP8 GDR3), Dual-Core 1.5 GHz Krait Processor, Chipset: Qualcomm MSM896 Snapdragon, Adreno 225 Graphics 4.3" S-LCD2 Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 2 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.