Nokia N900 Unlocked Smartphone for $429.99 after code MR2NCGS?ZTG63B. Here is a screenshot for reference. This unlocked quad-band GSM cell phone is compatible with GSM carriers like AT&T and T-Mobile. It features U.S. 3G compatibility, 3.5″ touchscreen LCD, slide-out QWERTY keyboard, 32GB internal memory, 5MP camera with Carl Zeiss lens, Bluetooth, Wi-Fi networking, GPS, FM radio, and more. Most places have it for over $540.