Au (mobile phone company) explained

au
Type:Public company
Location:Japan
Industry:Telecommunications
Products:Chaku-Uta-Full, LISMO
Parent:KDDI

au, or au by KDDI, is a Japanese mobile phone operator. au is a brand marketed by KDDI in the main islands of Japan and by Okinawa Cellular in Okinawa for their mobile cellular services. au is the second-largest wireless carrier in Japan, with 60.398 million subscribers as of March 2021.[1]

Naming

According to the brand creator, the name 'au' is based on the Japanese verbs for 'meet' (会う) and 'unite' (合う) (both pronounced 'au').[2] However, KDDI explains that au comes from two letters which stand for few words. 'A' is for access, always and amenity, and 'U' is for unique, universal and user. There is also a phrase, 'access to u(you)' that goes along the brand name.[3]

History

The network that would eventually become au was originally set up as two networks: DDI and IDO. IDO's network was based upon the NTT Hi-cap analog cellular system, and began operations in December 1988 in the Kanto and Tokai regions. DDI's network was run by independent phone companies, and began service in 1989 using the TACS system elsewhere in Japan. Nippon Idou Tsushin (IDO) was owned by Toyota, whereas DDI was owned by Kyocera Corporation.

was established in November 2000 by Kyocera as part of the DDI Cellular network. In 2001, the company was merged into KDDI (which had been formed in 2000 by the merger of DDI, KDD, and IDO), but its brand name was retained and applied to all mobile phone service under KDDI group.

au established a nationwide 3G network in 2003, replacing its previous cdmaOne service with CDMA 1X WIN (1xEV-DO Rev A) service.

au started selling the iPhone 4S from 14 October 2011.

au launched LTE service as 'au 4G LTE' in September 2012.

au launched 5G service as 'UNLIMITED WORLD au 5G' on 26 March 2020.[4]

Products and services

au Listen Mobile Service. (Character mascot for this service is LISMO-kun).

Notes and References

  1. Web site: Number of subscribers by Carriers|TCA . Tca.or.jp.
  2. Web site: 社名・コーポレートブランド名 . 10 August 2010 . ZYXYZ . 28 December 2013.
  3. Web site: 全国シームレスな移動体通信事業の統一ブランド「au(エーユー)」について . KDDI . 12 February 2008 . ja . https://web.archive.org/web/20080129185901/http://www.kddi.com/corporate/news_release/kako/2000/0522/index2.html . 29 January 2008 . dead.
  4. Web site: "UNLIMITED WORLD au 5G"始動。第5世代移動通信サービス「au 5G」、3月26日から開始. news.kddi.com. ja. 2020-03-30.
  5. Web site: KDDI Announces 'EZ Machi Uta' Subscribers Exceed One Million. 14 March 2008.