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
Japanese mobile phone culture people keep their phone in 'manner mode' (silent mode) in order to not bother others and to avoid embarrassment on trains. On the other hand, writing emails or playing games with a cell phone while riding the train is completely acceptable. Electromagnetic energy is theorized to cause interference with heart pacemakers and other medical devices. Most trains contain signs demanding that mobile phones be turned off when around seats reserved for the elderly and handicapped, but passengers rarely do so. In hospitals, it is expected that one should turn it off entirely. Both talking on the phone or texting/messaging while