au

MVNOs sell their own SIMs and plans but run on au's network rather than owning one.

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About au

KDDI Corporation, operating under the "au" brand, stands as one of Japan's major mobile network operators (MNOs), offering a wide range of telecommunication and mobile services across the country. As a key player in the Japanese market, au competes with other prominent networks like NTT Docomo and SoftBank, driving innovation and competitive pricing in the mobile sector. Operating within the Asia & Middle East region, Japan utilizes Mobile Country Code (MCC) 440, and au is specifically identified by Mobile Network Code (MNC) 71. This MCC/MNC combination uniquely identifies au within the global mobile network landscape. Au provides comprehensive 4G LTE and advanced 5G services throughout Japan, with a reputation for quality and coverage, particularly in urban areas. In addition to mobile voice and data, KDDI au also offers services such as broadband internet, fixed-line telephony, and various content and entertainment platforms. The company has been instrumental in introducing new technologies and smartphone models to the Japanese market, consistently enhancing the mobile experience for its subscribers. They are known for partnering with global manufacturers to bring cutting-edge devices to their customers as well as offering a range of Japan-exclusive phones.

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