Samsung A737 QuadBand Unlocked Phone with 3G Support, 1.3 MP Camera and Stereo Bluetooth - Unlocked Phone - US Warranty - Red 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. Quad-band/3G slider phone in blue with brightly colorful screen and stereo Bluetooth music streaming Fast music and video downloads and streams via AT&T Mobile Music and Cellular Video 1.3-megapixel camera/camcorder; MicroSD expansion; IM via AIM, Windows Live and Yahoo! Up to 3 hours of talk time, up to 250 hours (10+ days) of standby time