au customer support information, one of the reasons that au is the carrier with the highest customer satisfaction rate in Japan

Mobile Phones

Customer support information for mobile phone use

Most popular FAQs

Support Movies

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Inquiries about au mobile services

Inquiries by Phone

Select your language.

Open: 9:00 – 20:00 *1

*1 Support for theft and loss of au mobile phones is available 24 hours a day.

Inquiries by E-mail

Make an inquiry by mail.


Customer support information for internet use

Information on Maintenance and Obstructions

"au one net" Support Desk

Customer Service Center (in Japanese Only)

Inquiries by Phone

Please call our Customer Service Center with your inquiries.

Customer Service Center

0077-7084 (toll-free)


0077-777 (toll-free)

Customer Service Center

0077-7084 (toll-free)


0077-777 (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.

Store Locator

Why au?

  • 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