Changes

! Time period !! Development summary

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| 1999 || NTT Docomo launches the world's first mobile Internet-services platform.<ref name="Overviewdd">{{cite web |title=Overview |url=https://www.nttdocomo.co.jp/english/corporate/about/outline/ |website=nttdocomo.co.jp |accessdate=15 October 2019}}</ref>

| 1991 || || || "Commenced operation of Osaka Regional Marketing Branch"<ref name="docomo-sys.co.jp"/>

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| 1992 || || || "Relocated head office to Ikebukuro from Koji-Machi, Chiyoda-Ku/The number of employees reached 300"<ref name="docomo-sys.co.jp"/>

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| 2006 || October || || " Since October 2006, when the introduction to the service which allows the user to [[Mobile number portability|carry their original phone number with a new provider]] was made, NTT Docomo has lost many users to [[au (mobile phone operator)|KDDI]] and [[SoftBank Mobile|SoftBank]]."

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| 2008 || February || || "NTT Investment Partners, Inc. (NTT-IP), a corporate venture capital firm, was established by NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT). The firm focuses on funding advanced/disruptive technologies, services and business models around the world and looks to leverage NTT Group companies’ business operations, technologies and vast network to its portfolio companies."

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| 2008 || April 19 || || "On April 19, 2008, it was announced that Ryuji Yamada, the current co-president of NTT Docomo, will be promoted as the president of NTT Docomo in June 2008. Masao Nakamura will stay in NTT Docomo as a director and also the senior adviser. Since October 2006, when the introduction to the service which allows the user to [[w:Mobile number portability|carry their original phone number with a new provider]] was made, NTT Docomo has lost many users to [[w:au (mobile phone operator)|KDDI]] and [[w:SoftBank Mobile|SoftBank]]. This promotion was made in order to get more users for NTT Docomo."<ref>{{cite web|url=http://www.asahi.com/business/update/0418/TKY200804180367.html|script-title=ja:ドコモ社長に山田副社長が昇格へ|accessdate=2008-04-18|date=2008-04-19|language=Japanese |archiveurl = https://web.archive.org/web/20080422030408/http://www.asahi.com/business/update/0418/TKY200804180367.html <!-- Bot retrieved archive --> |archivedate = 2008-04-22}}</ref>

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| 2008 || || || "Established Customer Information Systems Division, Billing Systems Division, Enterprise Information Systems Division, Information Systems Infrastructure Division, Business Intelligence Systems Division, Service Platform Division, System Development Division, Public Enterprise Business Division"<ref name="docomo-sys.co.jp"/>

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| 2012 || July || Acquisition || NTT Docomo acquires Italian company {{w|Buongiorno}} for 209 million euros.<ref>{{cite web|url=http://timesofindia.indiatimes.com/tech/news/telecom/NTT-Docomo-acquires-Italys-Buongiorno/articleshow/14730373.cms|title=NTT Docomo acquires Italy's Buongiorno|accessdate=2012-07-07}}</ref>

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| 2013 || February || || "NTT DOCOMO, INC. (DOCOMO) acquired NTT-IP aiming to strengthen cooperation with startup companies in terms of venture funding and incubatin on behalf of its parent NTT Group and changed NTT-IP’s trade name to DOCOMO Innovation Ventures, Inc. (DIV)

| 2013 || || || "Enterprise Solution Division/Acquired ISO39001 accreditation"<ref name="docomo-sys.co.jp"/>

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| 2013 || October || || "Changes official name to NTT DOCOMO, INC."<ref name="History"/>

| 2014 || || || "Takes over "dDREAMS" from NTT DOCOMO Capital investment from NTT DOCOMO/Increased capital to 11.3 billion JPY"<ref name="docomo-sys.co.jp"/>

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| 2014 || || || "From 2014, under Civil Protection Law of Japan, Docomo began offering a service called the "Area Mail Disaster and Evacuation Information Service" which broadcasts [[J-Alert]] messages (including Earthquake Early Warning) produced by the Japan Fire and Disaster Management Agency to its subscribers with compatible handsets (e.g. Sony XPERIA, iPhone 5s, Samsung Galaxy)."<ref>{{cite web|url=https://www.nttdocomo.co.jp/info/news_release/2014/03/28_00.html|title=緊急速報「エリアメール」、及び「緊急速報メール」を利用した国民保護に関する情報の配信を開始|accessdate=12 September 2019}}</ref>

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| 2016 || April || || "Shifted new business co-creation program 39works to NTT DOCOMO"<ref name="Historyh"/>

| 2017 || January || || "Launched NTT DOCOMO Ventures' Silicon Valley branch in the United States"<ref name="Historyh"/>

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| 2017 || October || || "Established a JPY 15 billion new venture fund, DOCOMO Innovation Fund II, L.P."<ref name="Historyh"/>

| 2018 || || || NTT Docomo Establishes IoT Division, Sales Channel Promotion Division Certified as a Health and Productivity Management Organization (White 500).<ref name="docomo-sys.co.jp"/>

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| 2018 || July || || "Established a JPY 20 billion venture fund, NTT Investment Partners Fund III, L.P. (NTT-IP Fund III)"<ref name="Historyh">{{cite web |title=History |url=https://www.nttdocomo-v.com/en/history/ |website=nttdocomo-v.com |accessdate=15 October 2019}}</ref>

| 2018 || December 28 || Acquisition || NTT DoCoMo acquires Conobie.<ref name="crunchbase.com"/>

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