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


Please review the FAQs before contacting Customer Center.

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 Message

【Inquire from Web】

  • Message through Web browser

【Inquire from Application】

[Supported Languages] 

English, Chinese, Portuguese, Vietnamese, Japanese

Open:10:00 – 19:00 *1

* Not available if there is no icon showing.

* Please be informed that you may be forwarded to the corresponding department depending on your inquiry.

*1 Inquiries after business hours will be addressed  on the following day. 

Customer support information for internet use

Information on Maintenance and Obstructions

"au one net" Support Desk

Inquiries about Internet services

Inquiries by Phone

Select your language.

Open: From 9:00 to 18:00

  • All of the indicated amounts include tax unless otherwise specified.
  • 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
      about au mobile services

      157(Toll Free)from au phones

      0077-7-111(Toll Free)

      about Internet services
      Contract / Fee / Billing

      0077-7084(Toll Free)

      Connection setting / failure

      0077-777(Toll Free)