This is the official Sony Xperia U User Guide in English provided from the manufacturer. If you are looking for detailed technical specifications, please see our Specs page.
Sony Xperia U is a stylish and compact handset, and one of its biggest virtues seems to be customization. That is why the designers called it Xperia U, from well... "you". You can quickly swap the bottom cap in something of different color, if you are so inclined, to match your playful or business mood and time of the day. Not only that, but there is this color matching illuminated bar at the bottom, which is the trademark of the new "Iconic Identity" style of the upcoming Xperias. It is transparent, but yet full of LED light of different colors, and also houses the antenna for better connectivity.