Mobile phone industry in Japan other email services have also introduced "emoji" that can be sent and received from mobile handsets as well as computers. Mobile phone industry in Japan The Japanese mobile phone industry is one of the most advanced in the world. As of July 31, 2013 there were 139,180,300 mobile phones in use in Japan. This is 110 percent of Japan's total population according to the Ministry of Internal Affairs and Communications. In Japanese, are often referred to as simply or for short. There are four cellular service operators in Japan. Willcom is the last PHS Personal Handy-phone System service operator. DoCoMo
Sony Mobile released in 2009 running on Symbian^1, which would be succeeded by Sony Ericsson Vivaz in 2010. For the Japanese market, Sony Ericsson also produced Linux- and Symbian-based MOAP handsets for NTT DoCoMo, as well as REX OS for au/KDDI. Sony Ericsson launched their first Windows Mobile device in 2008, the Xperia X1, at the 2008 Mobile World Congress in Barcelona, which carried the Windows Mobile operating system with a Sony Ericsson panel interface and was manufactured by HTC. They would further develop two more Windows Mobile devices: Sony Ericsson Xperia X2 and Sony Ericsson Aspen in 2010. By this time,