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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. (Source: Ministry of Internal Affairs and Communications) In Japanese, are often referred to as simply or for short. ==History== * In 1979, Nippon Telegraph and Telephone (NTT) launched the world's first first generation (1G) mobile phone service in Tokyo as a car phone. * In 1985, NTT offered Japan's first mobile phone service, called the "Shoulder Phone." * In 1988, Mobile Communication Group, which later was absorbed into KDDI, started mobile phone service * In 1993, NTT DoCoMo started its first digital mobile phone service (2G), using a Time division multiple access (TDMA) variant called Personal Digital Cellular. * In 1994, Digital Phone Group and Tu-Ka Group, both of which later became SoftBank Mobile, started mobile phone service. In the same year, DDI Pocket, a subsidiary of KDDI, started PHS mobile phone service. * In 1999, NTT DoCoMo started i-mode Internet service. * In 2001, NTT DoCoMo premiered the world's first Third Generation mobile phone service (3G), using W-CDMA technology called FOMA. * In 2002, KDDI started 3G service in Okinawa, using CDMA2000 technology. In the same year, J-Phone started 3G service using W-CDMA technology. * In 2003, J-Phone changed its name to Vodafone. * In 2006, Vodafone Japan was purchased by SoftBank and renamed to SoftBank Mobile. In the same year, MNP (Mobile Number Portability) was introduced. * In 2007, Japanese regulator introduced new guideline for unbundling new handset price and service plan. * In 2010, SoftBank Mobile will stop all non-3G services, focusing on 3G service only. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mobile phone industry in Japan」の詳細全文を読む スポンサード リンク
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