eXpansys offers the Unlocked Samsung Galaxy S II Android Smartphone, model no. i9100BKEU, for $579.99. Coupon code "20offls" cuts it to $559.99. With free shipping, that's the lowest total price we could find by $40, although we saw it for $20 less in September. This quad-band GSM phone features a 4.3" 480x800 touchscreen AMOLED display, 16GB memory, 8-megapixel camera with LED flash, Bluetooth, microSD/SDHC card slot, WiFi, USB connectivity, Android 2.3 (Gingerbread) OS, and more.