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
SIM lock that all smartphones and tablets released after May 1, 2015 by NTT DoCoMo, au by KDDI and SoftBank Mobile (the three major carriers in Japan) must be sold without a SIM lock upon request from customers and without any cost to the customer involved. Before that, only NTT DoCoMo and au by KDDI would remove the SIM lock after the phone is kept or used at least six months after purchase. See also: SIM locking in Croatia In Monaco, the partially state-owned communications mobile company Monaco Telecom does not sell SIM-locked phones. As there is no competition, consumers usually buy