Blackberry Curve 8310 Unlocked Phone with Bluetooth, 2MP Camera and GPS This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint. 2G GSM: 850 / 900 / 1800 / 1900 QWERTY keyboard, Trackball navigation, Blackberry Maps, Document viewer (Word, Excel, PowerPoint, PDF), Media player (MP4/WMV/H.263/H.264/MP3/WAV/eAAC+/WMA), Organizer. Camera: 2 MP, 1600x1200 pixels, LED flash. Internal Memory: 64 MB ROM, MicroSD expandable (4 GB max). 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.