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
Wireless Application Protocol handsets. WAP saw major success in Japan. While the largest operator NTT DoCoMo did not use WAP in favor of its in-house system i-mode, rival operators KDDI (au) and SoftBank Mobile (previously Vodafone Japan) both successfully deployed WAP technology. In particular, J-Phone's Sha-Mail picture mail and Java (JSCL) services, as well as (au)'s chakuuta/chakumovie (ringtone song/ringtone movie) services were based on WAP. Like in Europe, WAP and i-mode usage declined in the 2010s as HTML-capable smartphones became popular in Japan. The adoption of WAP in the US suffered because many cell phone providers required separate activation and additional fees for