Items to prepare for Model changes

Model changes

To change from an au mobile phone to another au mobile phone, the following items will be required.

  • 1

    The au mobile phone (including au IC card) currently in use

  • 2

    Your name seal

    • You can also conclude the contract with your signature.
  • 3

    Identification documents
    ("Resident Card" or "health insurance card")

    • Always bring the original documents.
  • 4

    Initial cost

    Following bills will be added to the first month's bill

    • New contracts and model changes (or adding units) Contract processing fee ¥3,000 (¥3,300 tax included)
    • When switching between a 4G LTE (compatible with au VoLTE) device,
      4G LTE (excluding au VoLTE-compatible device) device,
      4G LTE tablet (released after 2015), 4G LTE tablet (released before 2014),
      3G device and Wi-Fi router (or adding units) Contract processing fee ¥2,000 (¥2,200 tax included)

    au phone price(The amount depends on the phone model.etc.and can be paid in installments.)

    au may require a deposit (Amount set by us which is ¥100,000 or less per contract / no interest / tax-exempt). In this case, installment payments cannot be used to purchase an au mobile phone.

Download Foreign-language Versions of Parental Consent Forms

Download Power of Attorney form

How to unlock a SIM card

Procedures and other notes on unlocking a SIM card

Store Locator

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.

  • 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)