Samsung GT-C3520I Unlocked Quad-Band GSM Phone with 1.3 MP Camera, International Version  -Silver 3.5mm Audio Jack; 2.4-Inch TFT LCD display Screen, 256K colors and MicroSD Card, up to 16 GB; Java MIDP 2.0; Browser WAP 2.0/xHTML; 28MB Internal Memory; 2.0 High Speed USB; Bluetooth v2.1 with A2DP; 1.3MP Camera with Autofocus and Smile Detection; MP3 and MP4 Player; FM Radio; Social Networking Applications; SMS, MMS, Email, Push Email and IM and Instant Messaging with Windows Live Messenger, Yahoo, G-talk, FB Chat and Samsung Messenger (MR). Unlocked Quad-Band GSM Cell Phone compatible with 850/900/1800/1900 MHz frequencies and 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. Talk time up to 9 hr. 10 min - Standby up to 610 hours. Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.