KDDI Corporation (KDDI株式会社, KDDI Kabushiki Gaisha) (TYO: 9433) is a Japanese telecommunications operator formed on October 1, 2000 through the merger of DDI Corp. (Daini-Denden Inc.), KDD (Kokusai Denshin Denwa) Corp. (itself a former listed state-owned enterprise privatized in 1998), and IDO Corp. It has its headquarters in the Garden Air Tower in Iidabashi, Chiyoda, Tokyo.
|Keidīdīai kabushiki gaisha|
TOPIX Core 30 Component
|Founded||1953(establishment of Kokusai Denshin Denwa or KDD as a state-owned enterprise)|
|Founder||Government of Japan (for the KDD branch)|
Kazuo Inamori (for the DDI branch)
|Headquarters||Chiyoda, Tokyo, Japan|
|Takashi Tanaka, CEO|
|Products||Fixed line and mobile telephony, Internet services, digital television|
|Revenue||JP¥ 5.24 trillion (2020)|
|JP¥ 639.77 billion (2020)|
Number of employees
|Subsidiaries||KDDI R&D Labs|
KDDI Network & Solutions
Kokusai Cable Ship
Okinawa Cellular Telephone
KDDI provides mobile cellular services using the "au by KDDI" brand. ISP network services are provided under the au one net brand, while "au Hikari" is the name under which long-distance and international voice and data communications services and Fiber to the Home (FTTH) services are marketed. ADSL broadband services carry the brand name "ADSL One", and IP telephony over copper is branded as "Metal Plus".
On November 28, 2003, au by KDDI launched EV-DO Rev 0 service 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.
In December 2006, au by KDDI became the first carrier to provide an EV-DO Rev A service at a data rate of 3.1Mbit/s (downlink), 1.8Mbit/s (uplink).
au by KDDI has been very successful with its EZ wireless data services, EZweb, EZweb@mail, EZappli, EZchakuuta, ezmovie, and EZnaviwalk (GPS), using the advanced WAP technology. It supports both Java ME and BREW application environments.
In November 2004 au by KDDI introduced the music include ringtone download service Chaku 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 length Chaku Uta Full songs.
As of end of June 2005, au by KDDI has 20,122,700 customers, among which 18,723,200 (93%) are 3G CDMA2000 subscribers. It is Japan's second-largest cellular operator with an increasing 20.0% market share.
On January 26, 2006, the first pointing local search application, Mapion Local Search - Powered by GeoVector, was launched on the KDDI network on their GPS and compass equipped handsets. In January 2007, KDDI announced its ten new 3G models for spring 2007, and a concept of its new designer phone Media Skin by Tokujin Yoshioka which would later be displayed at the Museum of Modern Art in New York with the Infobar, Talby and Neon models. Toshiba, Casio, Sanyo, Kyocera, Hitachi, Sony Ericsson, Sharp, and Panasonic have manufactured the other models. In March 2007, Media Skin started selling.
KDDI announced that it would collaborate with the Taiwanese manufacturer HTC Corp. to sell the mobile phone HTC J in Japan starting May 2012. The HTC J mobile phone featured the Android 4.0 operating system.
KDDI together with Sumitomo Group signed an agreement with Myanmar State owned Myanmar Post and Telecommunication (MPT) in July 2014 to jointly operate a mobile phone service in Myanmar for next 10 years.
TU-KA (TU-KA by KDDI), a subsidiary company of KDDI, was a 2G PDC cellular operator in three metropolitan areas (Tokyo, Nagoya, and Osaka), which did not apply a 3G license. TU-KA was best known for having singer Ayumi Hamasaki to appear in their commercials. TU-KA was closed on March 31, 2008.
In August 2014, KDDI announced it was joining forces with five other global companies, including Google to build a 60Tbit/s undersea data transmission cable linking the United States West Coast and Japan. The cable started operation in June 2016.
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. The parties agreed on a $4.4 million settlement in 2006.