Detailed Method of the SIM Unlocking Procedure

From au website, you could check of the availability for the sim unlocking of au mobile phones and will be able to begin the next step (No processing fee).

  • Processing is available only when the devices are confirmed models with valid purchase history from a subscriber of the contract.
  • 1

    Access auHP. click here

  • 2

    Tap「SIM unlocking procedure (My au)」「SIMロック解除の手続き(My au)」

    • Back to au Homepage
  • 3

    Select the telephone number you wish to process and tap「Select」「選択」

    • Proceed to the next instruction if this does not appear on the screen.
  • 4

    Enter the 4-digit PIN code set up during the initial signing of contract then tap「Next」「次」

    • Proceed to the next instruction if this does not appear on the screen.
  • 5

    Please select either「device purchased at au」「auで購入した端末」or「other devices」「その他の端末」

    • For second-hand devices, please select「other devices」「その他の端末」
  • 6


    When「Device purchased at au」「auで購入した端末」is selected, list of devices with purchase history will be displayed.

    • Multiple information will be displayed if device upgrade has been processed.

    Devices available for SIM unlocking can be checked.
    To proceed with SIM unlocking, check the device you wish to SIM unclock and click「next」「次」

    • Cannnot be clicked 「next」「次へ」if there is no check any of the devices.


    When「other devices」「その他の端末」is selected, please enter IMEI of the device you wish to unclok and click「next」「次」

  • 7

    Tap「reason for unlocking」「解除の理由」,「contact information」「連絡先」,「apply with this detail 」「この内容で申し込む」
    For「contact information」「連絡先」,registered email address will appear on the pull down menu.

    • If no email address is showing or the information shown is no longer valid, please go to au ID member information to register a new contact information.

    Please refer to the below list "reason for unlocking".

  • 8

    Completion of temporary registration screen will appear.
    By clicking the URL sent to your selected email address, you will be transfered to「SIM unlocking completed screen」「SIMロック解除完了画面」

  • 9

    SIM unlocking has been completed.

  • 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)

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