"NTT DoCoMo today unveiled its docomo Smartphone Xperia, manufactured by Sony Ericsson and known as the Xperia X10 in markets outside Japan, which is scheduled to go on sale in Japan this April. Built on the open Android operating system and powered by a 1GHz CPU, the docomo Smartphone Xperia with 4.0-inch touchscreen features Mediascape, a Sony Ericsson signature application for intuitive organization of music, photos and videos. If the new “infinite button” is pressed while playing a song, Me...