Wikipedia

KDDI

For other uses, seeKDDI (disambiguation).

KDDI Corporation(KDDI kabushiki gaisha,KDDI Kabushiki Gaisha)(TYO:9433) is a Japanesetelecommunicationsoperator. It was established in 2000 through the merger of DDI(Đệ nhị điện điện,Daini Denden),KDD(ケイディディ),and IDO(Nhật Bản di động thông tín,Nippon Idō Tsūshin).In 2001, it merged with a subsidiary namedAu,which was formed through the merger of seven automotive and mobile phone companies from the DDI-Cellular Group. As of 2020, it is the second-largest mobile telecommunications provider in Japan in terms of the number of contracts, followingNTT Docomo.

KDDI Corporation
Native name
KDDI kabushiki gaisha
Keidīdīai kabushiki gaisha
Company typePublicKK
TYO:9433
TOPIX Core 30 Component
IndustryTelecommunications
Founded1953;71 years ago(1953)(establishment of Kokusai Denshin Denwa or KDD as a state-owned enterprise)[1][2]
FounderGovernment of Japan(for the KDD branch)
Kazuo Inamori(for the DDI branch)
HeadquartersChiyoda,Tokyo,Japan
Key people
Takashi Tanaka(businessman)[jp],CEO
Makoto Takahashi(businessman)[jp],President & CEO
ProductsFixed lineandmobile telephony,Internetservices,digital television
RevenueIncreaseJP¥ 5.24 trillion (2020)[3]
IncreaseJP¥ 639.77 billion (2020)[3]
Number of employees
44,952 (2020)[3]
Subsidiaries
List
  • Okinawa Cellular Telephone Company (53.9%)
  • JCOM (50%)
  • UQ Communications (32.3%)
  • BIGLOBE
  • Aeon Holdings
  • Chubu Telecommunications
  • Wire and Wireless
  • Telasa(50%)
  • au Financial Holdings
  • Supership Holdings
  • au Energy Holdings
  • KDDI Matomete Office
  • KDDI Digital Divergence Holdings
  • KDDI Engineering
  • KDDI Research
  • KDDI Cableships & Subsea Engineering
  • Japan Telecommunication Engineering Service
  • KDDI America
  • KDDI China
  • KDDI Asia Pacific
  • Telehouse Holdings
  • Kyocera Communication System (23.4%)
  • Mobaoku (33.4%)
  • Kakaku(17.4%)
  • Lac (32.4%)
Websitekddi

KDDI provides mobile cellular services using the Au brand. ISP network services are provided under theau one netbrand, while "au Hikari" is the name under which long-distance and international voice and data communications services andFiber to the Home(FTTH) services are marketed.ADSLbroadband services carry the brand name "ADSL One", and IP telephony over copper is branded as "Metal Plus".

History

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On April 1, 2002, au by KDDI launched3Gnetworks usingCDMA2000 1xtechnology.[citation needed]

On November 28, 2003, au by KDDI launchedEV-DO Rev 0service in the "CDMA 1X WIN" brand, and revolutionized Japan's mobile telecommunication industry by introducing fixed rate data subscription plans at a data rate of 2.4 Mbit/s.[citation needed]

In December 2006, au by KDDI became the first carrier to provide anEV-DO Rev Aservice at a data rate of 3.1Mbit/s (downlink), 1.8 Mbit/s (uplink).[citation needed]

au by KDDI has been very successful with its EZ wireless data services, EZweb, EZweb@mail, EZappli, EZchakuuta, ezmovie, and EZnaviwalk (GPS), using the advancedWAPtechnology. It supports bothJava MEandBREWapplication environments.[citation needed]

In November 2004 au by KDDI introduced the music include ringtone download serviceChaku Uta Full(music ringtone full), for download of full length songs to mobile phones. Within six months from introduction, on June 15, 2005, customers had downloaded 10 million full lengthChaku Uta Fullsongs.[citation needed]

As of end of June 2005, au by KDDI has 20,122,700 customers, among which 18,723,200 (93%) are3GCDMA2000subscribers. It is Japan's second-largest cellular operator with an increasing 20.0% market share.[citation needed]

On January 26, 2006, the first pointing local search application, Mapion Local Search - Powered byGeoVector,was launched on the KDDI network on their GPS and compass equipped handsets.[4]In January 2007, KDDI announced its ten new 3G models for spring 2007, and a concept of its new designer phone Media Skin byTokujin Yoshiokawhich would later be displayed at theMuseum of Modern ArtinNew Yorkwith the Infobar, Talby and Neon models.Toshiba,Casio,Sanyo,Kyocera,Hitachi,Sony Ericsson,Sharp,andPanasonichave manufactured the other models.[5]In March 2007, Media Skin started selling.[6]

KDDI announced that it would collaborate with the Taiwanese manufacturerHTC Corp.to sell the mobile phoneHTC Jin Japan starting May 2012. The HTC J mobile phone featured the Android 4.0 operating system.[7][8]

On October 21, 2011, KDDI buys Content Delivery NetworkCDNetworksFor $167 Million.[9]

KDDI together withSumitomo Groupsigned an agreement withMyanmarState ownedMyanmar Post and Telecommunication(MPT) in July 2014 to jointly operate a mobile phone service in Myanmar for next 10 years.[10]

Consumer showroom is set inHarajukucalled, "KDDI Designing Studio".

TU-KA(TU-KA by KDDI), a subsidiary company of KDDI, was a 2GPDCcellular operator in three metropolitan areas (Tokyo,Nagoya,and Osaka), which did not apply a 3G license. TU-KA was best known for having singerAyumi Hamasakito appear in their commercials. TU-KA was closed on March 31, 2008.

DDI Pocket,aPHSoperator, was previously owned by KDDI but was spun off asWillcomwhich is now incorporated intoY!Mobile.

In August 2014, KDDI announced it was joining forces with five other global companies, includingGoogleto build a 60 Tbit/s undersea data transmission cable linking the United States West Coast and Japan.[11]The cable started operation in June 2016.[12]

KDDI andEricssonbegan working together in December 2015 in order to research and develop5Gtechnology.[13]

Lawsuits

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In 2003, several class action complaints were filed against DDI for misrepresenting and/or failing to disclose material facts about the company's financial results.[14]The parties agreed on a $4.4 million settlement in 2006.[15]

See also

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References and footnotes

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  1. ^"KDDI Corporation: Private Company Information".bloomberg.Retrieved6 May2018.
  2. ^"History | About KDDI".kddi.Retrieved6 May2018.
  3. ^abc"KDDI Annual Report"(PDF)(Press release).RetrievedFebruary 17,2021.
  4. ^"GeoVector: Press Room".Archived fromthe originalon January 16, 2009.RetrievedApril 22,2009.
  5. ^"Wireless Watch Japan".Wireless Watch Japan - Mobile in Tokyo.Retrieved2019-04-01.
  6. ^Chen, Jason (17 January 2007)."Japan Watch: Media Skin Cellphone".Gizmodo.Retrieved2019-04-01.
  7. ^"Brightwire".Brightwire. Archived fromthe originalon 2013-01-18.Retrieved2016-03-28.
  8. ^"HTC and KDDI to sell HTC J".BrightWire. Archived fromthe originalon 2013-01-18.
  9. ^"Japanese Telco KDDI Buys Content Delivery Network CDNetworks For $167 Million".Techcrunch. October 21, 2011.
  10. ^"KDDI, Sumitomo ink deal with Myanmar telecom for mobile phone service".The Japan Times.17 July 2014.Retrieved17 July2014.
  11. ^"High-speed Undersea Cable to Link US, Asia".The Tokyo News.Net. 12 August 2014.Retrieved13 August2014.
  12. ^"Google Cloud customers run at the speed of light with new faster undersea pipe".Retrieved30 May2017.
  13. ^Dan Kobialka (2015-12-01)."Ericsson, KDDI Partner for 5G Research and Development".Telco Hub content from Talkin' Cloud.Talkincloud. Archived fromthe originalon 2016-05-05.Retrieved2016-03-28.
  14. ^"Class action suit filed vs DDI".Archived fromthe originalon 2016-03-05.Retrieved2013-07-19.
  15. ^ "Notice of pendency and proposed settlement of class action"(PDF).[dead link‍]
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