Asus P550 smartphone running on Windows Mobile 6.0 Professional. Other hardware specifications include 256MB ROM, 64MB RAM, support for 2100MHz UMTS networks and tri-band GSM networks, a 3.5″ 65 color TFT display at 240 x 320 resolution, a 2 megapixel camera. After you jump see more pictures of Asus P550 smartphone.