O2 XDA Serra is a touchscreen as well as Full QWERTY keyboard phone. The phone comes with 2.8 inches screen size and 165 grams in weight. It has 32GB expandable memory. It has handwriting recognition and pocket office. It has 3.15 megapixel camera with LED flash. It has VGA vieocall camera. The phone has connectivity options like WLAN and Bluetooth. The phone runs on the Microsoft Windows Mobile 6.1 Professional OS. The phone has GPS.