au HIKARI is a comprehensive broadband service that, on top of the Internet connection, provides a telephone service comparable to NTT-subscribed phones in terms of quality, reliability and functionality, multi-channel TV broadcasts, and a video on-demand service. Using optic fiber, this service draws on KDDI's reliable optic fiber network and advanced content delivery network (CDN).

What is au HIKARI? What is au HIKARI?

Three Key Points

For au Mobile Phone Users


Inquiries by Phone

Please call our Customer Service Center with your inquiries.

Customer Service Center

0077-7084 (toll-free)

Customer Service Center
0077-7084 (toll-free)

From 9:00 to 20:00 (365 days a year)

Inquiries by E-mail

Please e-mail your inquiries to our Customer Service Center.

  • By phoneOpen 9:00 – 20:00

    • English

      0120-959-472(Toll Free)

    • Portuguese

      0120-959-473(Toll Free)

    • Chinese

      0120-959-476(Toll Free)

    • Korean

      0120-959-478(Toll Free)

    • Tagalog

      0120-933-952(Toll Free)

    • Vietnamese

      0120-933-961(Toll Free)

    • Japanese

      157(Toll Free)from au phones

      0077-7-111(Toll Free)

  • By e-mailSend e-mail