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
Osaifu-Keitai Osaifu-Keitai , literally "Wallet Mobile", is the "de facto" standard mobile payment system in Japan. Osaifu-Keitai services include electronic money, identity card, loyalty card, fare collection of public transits (including railways, buses, and airplanes), or credit card. The system was developed by NTT docomo but the system is also supported by other mobile phone operators. It uses Sony's Mobile FeliCa ICs. FeliCa, developed by Sony, is the "de facto" standard technology used for Japanese smart cards. Many of these cards accept Osaifu-Keitai (Mobile FeliCa) system as well, or plan to accept it in future. Osaifu-Keitai can provide more convenient services