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Timeline of NTT Docomo

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| 1952 || || Early development || Nippon Denshin Denwa Kosha ([[w:Nippon Telegraph and Telephone|Nippon Telegraph and Telephone Public Corporation]] (NTTPC)) is launched as a public corporation and becomes the main engine for Japanese telecommunications {{w|R&D}}.<ref>{{cite book |last1=Okada |first1=Yoshitaka |title=Struggles for Survival: Institutional and Organizational Changes in Japan's High-Tech Industries |url=https://books.google.com.ar/books?id=URDCtQdnuI4C&pg=PA217&dq=1952++Nippon+Telegraph+and+Telephone+Public+Corporation&hl=en&sa=X&ved=0ahUKEwiQg5Py4YbmAhW0LLkGHSxABswQ6AEILjAB#v=onepage&q=1952%20%20Nippon%20Telegraph%20and%20Telephone%20Public%20Corporation&f=false}}</ref><ref name="fundinguniverse.com">{{cite web |title=Nippon Telegraph and Telephone Corporation History |url=http://www.fundinguniverse.com/company-histories/nippon-telegraph-and-telephone-corporation-history/ |website=fundinguniverse.com |accessdate=15 October 2019}}</ref>
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| 1985 || May 30 || Early development || State-owned Nippon Telegraph and Telephone Public Corp. is privatized as Nippon Telegraph and Telephone Corporation (NTT) launches as a privatized joint stock corporation operating domestic amid liberalization of the telecommunicationssector.<ref name="fundinguniverse.com"/><ref name="docomo-sys.co.jp">{{cite web |title=History |url=https://www.docomo-sys.co.jp/english/company/history.html |website=docomo-sys.co.jp |accessdate=12 September 2019}}</ref><ref>{{cite book |last1=Takano |first1=Yoshirō |title=Nippon Telegraph and Telephone Privatization Study: Experience of Japan and Lessons for Developing Countries, Parts 63-179 |url=https://books.google.com.ar/books?id=3aW1AAAAIAAJ&q=Nippon+Telegraph+and+Telephone+Corporation+in+1985&dq=Nippon+Telegraph+and+Telephone+Corporation+in+1985&hl=en&sa=X&ved=0ahUKEwj9memH44bmAhXlD7kGHQ7IAWMQ6AEITzAF}}</ref> Operating domestic telecommunications, it is considered "one of the most powerful sparks that lit the communications revolution in Japan".<ref name="Communication">{{cite web |title=Communication |url=https://features.japantimes.co.jp/heisei-moments-part-8-communication/ |website=features.japantimes.co.jp |accessdate=26 November 2019}}</ref>
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| 1986 || April || Funding || Capital investment from {{w|FUJITSU}} and {{w|Hitachi}} increases to 499 million JPY.<ref name="docomo-sys.co.jp"/>
| 1991 || || Early development || {{w|NTT DOCOMO}} commences operation of its Osaka Regional Marketing Branch.<ref name="docomo-sys.co.jp"/>
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| 1991 || August || Founding || NTT Mobile Communications Network is established as a {{w|spin-off}} by the {{w|Nippon Telegraph and Telephone}} (NTT) as a subsidiary to take over the mobile cellular operations.<ref>{{cite web |title=NTT DoCoMo |url=https://www.pcmag.com/encyclopedia/term/48149/ntt-docomo |website=pcmag.com |accessdate=15 October 2019}}</ref><ref>{{cite book |last1=Jain |first1=Vipul |title=Recent Trends in Intelligent Computing, Communication and Devices |url=https://books.google.com.ar/books?id=vUuzDwAAQBAJ&pg=PA1063&lpg=PA1063&dq=August+14,+1991+%22DOCOMO%22&source=bl&ots=QY_R6wQt54&sig=ACfU3U23aehqGfjuSOVoQEEZ5esKOZAwyw&hl=en&sa=X&ved=2ahUKEwjx4ouXjZ_lAhUZILkGHW8YC08Q6AEwCnoECAoQAg#v=onepage&q=August%2014%2C%201991%20%22DOCOMO%22&f=false}}</ref><ref name="crunchbase.com">{{cite web |title=NTT DoCoMo |url=https://www.crunchbase.com/organization/ntt-docomo#section-overview |website=crunchbase.com |accessdate=15 October 2019}}</ref> This unit would soon adopt the nickname DoCoMo, which stands for "Do Communications Over the Mobile Network".<ref name"dfgghj">{{cite book |last1=Vesa |first1=Jarkko |title=Mobile Services in the Networked Economy |url=https://books.google.com.ar/books?id=S93M_UK4iegC&pg=PA124&dq=%22ntt%22+%22docomo%22+%22in+1985..1992%22&hl=en&sa=X&ved=0ahUKEwjxz-aniYjmAhVsJrkGHULwD_YQ6AEIKTAA#v=onepage&q=%22ntt%22%20%22docomo%22%20%22in%201985..1992%22&f=false}}</ref>
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| 1992 1991 || || Administration || {{w|There are about 5.75 million pager subscribers in Japan, of which NTT DOCOMO}} relocates head office to {{w|Ikebukuro}} from Koji-Machi, Chiyoda-Kuhas some 3.5 million.<ref name="docomo-sys.co.jpCommunication"/>
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| 1992 || || Personnel Administration || NTT Mobile Communications Network relocates head office to {{w|NTT DOCOMOIkebukuro}} number of employees reaches 300from Koji-Machi, Chiyoda-Ku.<ref name="docomo-sys.co.jp"/>
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| 1992 || || Personnel || NTT Mobile Communications Network number of employees reaches 300.<ref name="docomo-sys.co.jp"/>|-| 1992 || July 1 || Reorganization || NTT Mobile Communications Network begins operations and assumes control of mobile communications business of the reorganizing [[w:Nippon Telegraph and Telephone|Nippon Telegraph and Telephone Corporation]] (NTT).<ref name="Communication"/><ref name="History">{{cite web |title=History |url=https://www.nttdocomo.co.jp/english/corporate/about/outline/history/ |website=nttdocomo.co.jp |accessdate=11 September 2019}}</ref> This event is considered to be the birth of NTT DoCoMo, after the cellular communications services of NTT are carved out from the former telecom monopolist's other lines of business.<ref name="i-mode Wireless">{{cite web |title=NTT DoCoMo: i-mode Wireless Internet Services |url=https://www.bus.umich.edu/kresgepublic/journals/gartner/research/96500/96594/96594.html |website=bus.umich.edu |accessdate=16 October 2019}}</ref>
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| 1993 || March || Service || NTT MCN Launches mova 2G (800 MHz) digital cellular phone service.<ref name="History"/>
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| 1993 || || Administration || NTT MCN establishes its Main Sales Division.<ref name="docomo-sys.co.jp"/>
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| 1993 || || || Nearly 70 percent of new NTT pager subscribers are individuals instead of companies.<ref name="Communication"/>
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| 1994 || April || Service || NTT MCN launches CITYPHONE 1.5 GHz digital cellular phone service in urban areas.<ref name="History"/>
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