Samsung Google Nexus S - Unlocked GSM Phone International Version/Warranty 3G Bands 900/1700/2100 Talk time up to 14 hours - Standby up to 700 hours. Flash Player v10. 1, Google Search, Maps, Gmail, YouTube, Calendar, Google Talk Bluetooth v2. 1 with A2DP; Social networking integration Unlocked Quad-Band GSM cell phone compatible with 850/900/1800/1900MHz and 3G HSDPA 900/1700/2100 frequencies plus GPRS/EDGE data capabilities This unlocked cell phone will work on GSM carries like AT&T and T-Mobile. Not all carrier features may be supported Android OS, v2. 3 Gingerbread; 5 MP Camera, 2560 x 1920 pixels, autofocus, LED flash, Geo-tagging, touch focus 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. 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.