The Samsung Propel Pro is a Windows Mobile Standard 6.1 smartphone with a slide-out keyboard, offered by AT&T. It's a GSM phone with 3G speeds (UMTS/HSDPA 850/1900/2100 MHz) and Quad-band 2G (850/900/1800/1900 MHz). It has a 528 mhz CPU, 256 MB of ROM, and 128 MB RAM. The 2.55 inch screen has 320 x 320 resolution, and the Propel Pro also brings 802.11b/g WiFi to the table along with GPS, and Bluetooth 2.0. Please rate, subscribe, and comment. Thanks! Distributed by Tubemogul.