Sony Ericsson Z610i Unlocked Cell Phone with 2 MP Camera, 3G, MP3/Video Player, Memory Stick Micro Slot-International Version with No Warranty (Luster Black) Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. Tri-band GSM cell phone compatible with 900/1800/1900 frequencies and International 3G compatibility via 2100 UMTS plus GPRS/EDGE capabilities Expressive clamshell design with unique hidden "magic mirror" display 2-megapixel digital camera with video capture; Bluetooth music streaming; Memory Stick Micro (M2) expansion; web browser with RSS feeds Up to 6.7 hours of talk time and 240 hours (7 days) of standby time This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.