KDDI

KDDI is a Japanese telecommunications operator created in 2000 through the combination of three businesses with complementary positions in the communications market. DDI Corporation had developed as a long-distance communications company, KDD Corporation was the successor to Japan's former state-monopoly international telecommunications provider, and Nippon Idou Tsushin, commonly known as Ido, operated a mobile network. Their consolidation created a nationwide communications group with capabilities spanning mobile services, fixed networks, international connectivity, and enterprise communications. The consumer-facing center of KDDI's business is the au mobile brand. In 2001, KDDI integrated the regional companies that had made up the DDI Cellular Group, bringing its mobile operations under a more unified structure and establishing au as the principal consumer wireless brand. KDDI subsequently operated as one of Japan's major mobile network providers and became the country's second-largest mobile operator by contract count, behind NTT Docomo. The company has also used UQ Mobile and povo as additional mobile brands aimed at different price points, service models, and customer segments. KDDI's mobile business has been associated with several important stages in Japan's wireless development. In 2002, au by KDDI launched a third-generation network based on CDMA2000 1x technology. The company followed this with the CDMA 1X WIN service in 2003, using EV-DO Rev. 0 and fixed-rate data plans. These offerings helped expand mobile internet and data usage in Japan by making higher-speed wireless access more practical for consumers. KDDI later introduced EV-DO Rev. A, and its au service ecosystem included mobile web, email, downloadable applications, music, video, navigation, and location-based services. The company has historically competed not only through network coverage and handset selection but also through digital experiences. Services such as EZweb, EZweb mail, EZappli, EZ Chaku Uta, EZ Movie, and EZ Naviwalk extended the role of the mobile phone beyond voice calling. Its Chaku Uta Full service, introduced in 2004, enabled customers to download full-length music tracks as mobile-phone ringtones and reached ten million downloads within six months, according to the referenced material. KDDI also supported handset innovation through devices such as the Infobar, Talby, Neon, and Media Skin, the latter designed by Tokujin Yoshioka and later displayed at the Museum of Modern Art in New York alongside other au design products. KDDI's communications portfolio extends beyond cellular access. Au One Net has been used for internet service provider offerings, while au Hikari is the brand for fiber-to-the-home services. The company previously marketed ADSL One broadband and Metal Plus IP telephony over copper, although those legacy services have been discontinued. KDDI has also participated in enterprise, international, content-delivery, and infrastructure activities. It acquired the content-delivery-network operator CDNetworks in 2011, entered a long-term mobile-service operating partnership with Myanmar Post and Telecommunication and Sumitomo in 2014, and joined an international consortium that built a high-capacity submarine cable between Japan and the west coast of the United States. KDDI has maintained a role in the transition to newer mobile technologies. It began collaborating with Ericsson on 5G research and development in 2015. Its earlier consumer history also includes the TU-KA 2G service, which operated in Tokyo, Nagoya, and Osaka before being closed in 2008. KDDI's former DDI Pocket PHS business was separated and subsequently became associated with Willcom and later Y!Mobile. Overall, KDDI is best understood as an integrated Japanese communications group whose brand architecture combines a major mobile network, value-oriented mobile sub-brands, fixed broadband, digital services, and international network infrastructure.

KDDI's history reflects the restructuring of Japan's telecommunications industry from a collection of specialized and regional operators into integrated communications groups. The company was formed in 2000 by merging DDI Corporation, KDD Corporation, and Ido Corporation. DDI brought long-distance communications expertise, KDD represented Japan's former international telecommunications monopoly, and Ido contributed mobile-network operations. The combination gave KDDI a broad platform across domestic long-distance, international, fixed, and wireless communications. A major early priority was the integration of mobile assets. In 2001, KDDI absorbed the regional companies that had operated under the DDI Cellular Group and placed them under the au brand. This created a more coherent national mobile proposition and allowed the company to compete more effectively with NTT Docomo and other Japanese operators. KDDI's former TU-KA subsidiary continued to operate a separate second-generation PDC network in the Tokyo, Nagoya, and Osaka areas, but TU-KA was eventually closed on March 31, 2008. DDI Pocket, KDDI's former PHS business, was spun off and became Willcom before later being incorporated into Y!Mobile. The au business became an important participant in Japan's transition from voice-centric cellular services to mobile internet. In April 2002, au launched CDMA2000 1x third-generation services. In November 2003, it introduced CDMA 1X WIN using EV-DO Rev. 0 and paired the technology with fixed-rate data subscriptions. KDDI later introduced EV-DO Rev. A in 2006. These developments supported a growing collection of mobile data services, including EZweb, mobile email, Java and BREW applications, downloadable music, video, and GPS-based navigation. KDDI also used handset design and content partnerships to differentiate au. Chaku Uta Full, introduced in 2004, offered downloads of complete songs and reached ten million downloads within six months. The company supported a range of distinctive handsets from manufacturers including Toshiba, Casio, Sanyo, Kyocera, Hitachi, Sony Ericsson, Sharp, and Panasonic. Its design-oriented portfolio included the Infobar, Talby, Neon, and Media Skin. Media Skin was created by Tokujin Yoshioka and later exhibited at New York's Museum of Modern Art with other notable au designs. KDDI also operated a consumer showroom in Tokyo's Harajuku district known as KDDI Designing Studio. The company expanded beyond mobile connectivity through internet access and fixed networks. Au One Net served as an internet-service-provider brand, while au Hikari was used for fiber-to-the-home services. Earlier offerings included ADSL One and Metal Plus, an IP-telephony service over copper infrastructure; both were later discontinued. KDDI's wider business also included enterprise communications, international network services, and infrastructure for digital content delivery. KDDI pursued international and infrastructure initiatives during the 2010s. In 2011, it acquired CDNetworks, a content-delivery-network operator. In 2014, KDDI and Sumitomo agreed with Myanmar Post and Telecommunication to jointly operate a mobile service in Myanmar for ten years. The same year, KDDI joined Google and other international companies in a project to construct a high-capacity submarine cable between Japan and the west coast of the United States. The cable began operating in 2016. In 2015, KDDI and Ericsson began research and development collaboration focused on 5G technology. KDDI's consumer structure has continued to include multiple mobile propositions. Au remains the principal network brand, while UQ Mobile and povo provide additional service models and price positions. The group therefore combines network ownership and operation with a multi-brand approach to consumer telecommunications, fixed broadband, digital services, and international connectivity. The available reference material does not identify current executives, ownership details, headquarters information, or a confirmed corporate website, so those fields remain unspecified in this dossier.

1. 2016Trans-Pacific cable enters service

   A high-capacity submarine cable connecting Japan and the United States west coast begins operation.

   Source
2. 2014Myanmar mobile-service partnership

   KDDI and Sumitomo agree to work with Myanmar Post and Telecommunication on mobile-service operations.

   Source
3. 2011CDNetworks acquisition

   KDDI acquires content-delivery-network operator CDNetworks.

   Source
4. 2008TU-KA service closes

   KDDI's TU-KA second-generation mobile service is discontinued.

   Source
5. 2006EV-DO Rev. A service begins

   au by KDDI becomes an early Japanese carrier to provide EV-DO Rev. A service.

   Source
6. 2004Chaku Uta Full launches

   The au service introduces full-length music downloads for compatible mobile phones.

   Source
7. 2003Launch of CDMA 1X WIN

   KDDI introduces EV-DO Rev. 0 data service and fixed-rate data plans under the CDMA 1X WIN brand.

   Source
8. 2002Launch of CDMA2000 1x

   au by KDDI begins offering third-generation services using CDMA2000 1x.

   Source
9. 2001Mobile operations are unified under au

   KDDI absorbs the regional DDI Cellular companies and consolidates their consumer mobile services under the au brand.

   Source
10. 2000KDDI is established

    DDI Corporation, KDD Corporation, and Ido Corporation merge to form KDDI.

    Source

A full-service Japanese telecommunications group combining a major mobile network with fixed broadband, digital services, enterprise communications, and international connectivity. Its brand portfolio spans premium and mainstream au services as well as lower-cost or digitally oriented mobile propositions such as UQ Mobile and povo.

• auMobile telecommunications2001

  KDDI's principal consumer mobile brand, providing cellular voice, messaging, mobile data, and smartphone services over the company's Japanese network. The brand has historically been associated with CDMA2000, EV-DO, mobile internet, downloadable content, location services, and distinctive handset programs. Au remains the central consumer identity through which KDDI markets its mainstream mobile network offering.

• UQ MobileMobile telecommunications

  A KDDI mobile sub-brand positioned separately from the main au proposition. It serves customers seeking a different balance of price, data allowance, and service features within KDDI's broader consumer mobile portfolio.

• povoMobile telecommunications

  A digitally oriented KDDI mobile sub-brand offering an alternative service model to the principal au brand. It forms part of KDDI's multi-brand strategy for addressing customers with different usage patterns and price expectations.

• au One NetInternet service provider

  KDDI's internet-service-provider brand for network access and related connectivity services. It complements the company's mobile and fixed-network businesses by providing an internet access proposition under the au family of brands.

• au HikariFiber broadband

  The brand used for KDDI's fiber-to-the-home broadband services. Au Hikari extends the au ecosystem into fixed connectivity, offering a network product distinct from KDDI's mobile services while supporting an integrated household communications proposition.

• CDMA 1X WINMobile data network2003

  A historical au mobile-data service launched with EV-DO Rev. 0 technology. Its fixed-rate data plans and higher speeds helped make mobile internet more broadly usable in Japan during the early 3G period.

• TU-KAMobile telecommunications

  A former KDDI subsidiary and second-generation PDC mobile operator serving the Tokyo, Nagoya, and Osaka metropolitan areas. The business did not receive a 3G license and was closed on March 31, 2008.

• ADSL OneBroadband

  A historical KDDI ADSL broadband service. It formed part of the company's earlier fixed-line internet portfolio but has since been discontinued.

• Metal PlusIP telephony

  A former KDDI IP-telephony service delivered over copper infrastructure. The product represented KDDI's effort to extend voice services beyond conventional fixed-line telecommunications before being retired.

• 20155G research collaboration with EricssonGeneration change

  The telecommunications industry was preparing for the next generation of mobile network technology.

  What changed. KDDI and Ericsson began joint research and development work on 5G.

  Aftermath. The collaboration supported KDDI's preparation for future-generation mobile networks.

  Source
• 2014Myanmar mobile-service partnershipStrategy

  Myanmar was opening opportunities for expansion of mobile communications infrastructure and services.

  What changed. KDDI and Sumitomo agreed with Myanmar Post and Telecommunication to jointly operate a mobile service for ten years.

  Aftermath. The agreement extended KDDI's operating involvement beyond Japan into Myanmar's mobile market.

  Source
• 2011Acquisition of CDNetworksM&A

  KDDI sought to expand its capabilities in internet content delivery and network infrastructure.

  What changed. KDDI acquired CDNetworks.

  Aftermath. The transaction broadened KDDI's role in content-delivery-network services.

  Reported acquisition price. $167 million (2011)

  Source
• 2003Launch of CDMA 1X WINProduct launch

  Consumers were beginning to use mobile phones for increasingly data-intensive services.

  What changed. KDDI introduced CDMA 1X WIN with EV-DO Rev. 0 and fixed-rate data subscriptions.

  Aftermath. The service helped accelerate adoption of higher-speed mobile data in Japan.

  Source
• 2002Deployment of CDMA2000 1xGeneration change

  Mobile operators were moving from second-generation voice networks toward packet-data and third-generation services.

  What changed. Au by KDDI launched a CDMA2000 1x third-generation network.

  Aftermath. The network supported the expansion of KDDI's mobile internet and data-service ecosystem.

  Source
• 2001Unification of mobile operations under auStrategy

  KDDI inherited a set of regional mobile companies through the DDI Cellular Group.

  What changed. KDDI absorbed the regional companies and consolidated their consumer mobile activities under the au brand.

  Aftermath. Au became KDDI's principal nationwide consumer mobile identity.

  Source
• 2000Merger creating KDDIM&A

  Japan's telecommunications market contained separate long-distance, international, and mobile operators with complementary assets.

  What changed. DDI Corporation, KDD Corporation, and Ido Corporation combined to establish KDDI.

  Aftermath. The resulting group had a broader platform for competing in mobile, fixed, international, and enterprise communications.

  Source

• 2003DDI financial-disclosure class action complaintsControversy

  Several class action complaints were filed against DDI alleging that the company misrepresented or failed to disclose material information concerning its financial results. The matter was resolved through a settlement reached in 2006.

  Source

• 2016Trans-Pacific submarine cable enters service

  The high-capacity cable linking Japan and the United States west coast began operations.

  Product launchOther
  Source
• 2015KDDI and Ericsson begin 5G research collaboration

  The companies began working together on research and development related to fifth-generation mobile technology.

  Product generation
  Source
• 2014KDDI and partners agree to operate mobile services with Myanmar Post and Telecommunication

  KDDI and Sumitomo entered an agreement with Myanmar's state-owned telecommunications operator to jointly operate a mobile service for ten years.

  Other
  Source
• 2014KDDI joins trans-Pacific submarine-cable project

  KDDI joined Google and other global companies in developing a high-capacity submarine cable connecting Japan with the United States' west coast.

  Other
  Source
• 2012KDDI and HTC announce the HTC J for Japan

  KDDI partnered with HTC to offer the HTC J in Japan, using Android 4.0.

  Product launch
  Source
• 2011KDDI acquires CDNetworks

  KDDI acquired the content-delivery-network operator CDNetworks, expanding its position in internet delivery infrastructure.

  M&A
  Source
• 2004KDDI launches full-track mobile music downloads

  Chaku Uta Full enabled full-length music downloads to compatible mobile phones and rapidly became a significant mobile-content service.

  Product launchCampaign
  Source
• 2003KDDI introduces CDMA 1X WIN with EV-DO data service

  The CDMA 1X WIN service used EV-DO Rev. 0 and fixed-rate data plans to expand high-speed mobile internet use.

  Product launchProduct generationPricing
  Source
• 2002au launches CDMA2000 1x third-generation network

  The au business introduced a 3G network using CDMA2000 1x technology.

  Product launchProduct generation
  Source
• 2001KDDI consolidates regional mobile operations under au

  KDDI absorbed the regional companies of the DDI Cellular Group and unified its mobile services under the au brand.

  Other
  Source
• 2000KDDI is established through the merger of DDI, KDD, and Ido

  The merger combined long-distance, international, and mobile telecommunications operations into the KDDI group.

  M&AOther
  Source

1. KDDI