HTC Freestyle Brew MP Feature GSM Cell Phone AT&T NEW 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 Operating System: Brew Mobile Platform, 528 MHz Processor, Chipset: Qualcomm MSM7225 3.2-inch TFT Display Capacitive Touchsscreen 3.2 Megapixel Camera (2048 x 1536 pixels) Internal Memory: 150MB storage, 256MB RAM, 256MB ROM + microSD Slot Expandable up to 32GB 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.