The Samsung SGH-D820 is the non-U.S. version of the Samsung SGH-T809. While both of them have quadband (GSM 850/900/1800/1900), or world phone, support, the T809 was made specifically for T-Mobile in the United States, while the D820 was meant for the GSM markets in Europe, Asia, Africa, Latin America, and the Caribbean islands. Similar in both design and features, they're both slim slider phones featuring a rotating 1.3-megapixel camera lens, a video recorder, a music player, Bluetooth, and more. Check out our review of the Samsung SGH-T809 or CNET Asia's review of the Samsung SGH-D820 for more details.