Samsung X820 Unlocked Cell Phone with 2 MP Camera, MP3 Player--International Version with Warranty (Black) 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. Tri-band GSM cell phone compatible with 900/1800/1900 frequencies and GPRS/EDGE capabilities 2-megapixel digital camera with video capture; TV out; 3.7 MB memory (no expansion) Bluetooth for handsfree devices; access to personal email; document viewer; organizer Up to 2.5 hours of talk time, up to 210 hours (8+ days) of standby time