Sony Ericsson K510i Unlocked Cell Phone with Camera, Media 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 data capabilities 1.3-megapixel camera with 4x digital zoom and video capture; 28 MB internal memory (not expandable) Bluetooth for handsfree devices; speakerphone; access to personal email; web browser with RSS feeds Up to 7 hours of digital talk time and up to 360 hours (15 days) of standby time