SIM Unlocking Procedures

The following are procedures and important considerations for unlocking a SIM card with an au mobile phone.

The following are procedures and important considerations for unlocking a SIM card with an au mobile phone.

FAQ - SIM unlocking procedures for using another company’s SIM card

Will my coverage area/transmission speed be affected?
It is possible that you will be out of your telecommunications provider's coverage area or that your transmission speed will drop due to the fact that different telecommunications providers use different frequency bands. Also, you will not be able to use VoLTE voice services on an au VoLTE-compatible au mobile phone without an au VoLTE-compatible SIM.
Are any special settings required to continue using my device?
In some cases you will need to input the APN settings (APN, user name, PW, authentication type, etc.) of your telecommunications provider. Please check your telecommunications provider's website.
Will au still fix or replace my smartphone if it breaks?
Even if you perform SIM unlocking on your smartphone, au will still handle your smartphone issue regardless of whether or not you have a subscriber agreement with au. However, if you do not have a subscriber agreement with au, you cannot receive a temporary replacement phone while your phone is being repaired. Also, please understand that even if you do have a subscriber agreement with au, the temporary replacement phone loaned to you will not be SIM-unlocked.
  • *The scope and details of the guarantee will differ based on the level of service (e.g., the Keitai Guarantee Service Plus LTE) purchased.
Will I still be able to use au services like before?
au makes no guarantee regarding the operation of any au mobile phone which is being used with another company's SIM card. In addition, restrictions may apply to the usage of functions, applications and services, such as the au Smart Pass.

List of Frequency Bands Accessible to Mobile Phones and Devices Allowing SIM Unlocking

Follow the below link for a list of frequency bands accessible to mobile phone models allowing SIM unlocking.

Unlocking Procedures

After you have read and understood the Important Considerations Regarding Sim Unlocking, please follow the procedures below.

PCSmartphonePC / Smartphone

Check if your au mobile phone can be SIM unlocked and perform the procedures. (No processing fee)

  • * Models for which the contract has been canceled (such as secondhand models) or transferred to a different name are accepted at au shops. The procedures cannot be performed on My au.
  • * Models without a line contract (models purchased from an au dealer with the intent of using with another company) are accepted at au shops.
  • * Models without a line contract (models purchased from an au dealer with the intent of using with another company) can be unlocked free of charge by contacting the call center (temporary line) below, only if there is no outstanding balance owed or if at least 100 days have passed since the date of purchase.
  • Call center (temporary line) : 0120-590-057 (Business hours: 10:00 to 18:00, 365 days a year)

You can check the detailed method of the SIM unlocking procedure in English on My au.
Click here for the detailed method of the SIM unlocking procedure

au Shopau Shop

Apply at any au shop.

Store Locator

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Requirements for phone model eligibility: Please confirm in advance
SIM unlocking is possible on any au mobile device meeting the following conditions.
  • Model released after April 23, 2015 that supports SIM unlocking
    Click here for a list of all of such models.
  • au mobile phones without any network-use regulations.(in Japanese only)
  • Any new au mobile device purchased no more than 101 days before.
    However, SIM unlocking procedures can be performed even within 100 days from the model purchase in the following cases.
    • Models with a line contract
      • ・If you purchased the model with a lump payment
        • * For models to which au Purchase Support etc. (measure for KDDI to bear a portion of the responsibility of the model purchase amount as a condition of continued use of the purchased model and applicable condition of the contract renewal) is applied, SIM unlocking procedures cannot be performed within 100 days from the model purchase. (Scheduled to apply from January 16, 2018)
      • ・If the target line has a history of SIM unlocking [1] and 101 days have passed from the application of the previous SIM unlock
        • [1]Applies to SIM unlocking application received after July 11, 2017.
    • Unlocking models that do not have a line contract (models purchased from an au dealer with the intent of using with another company)
      • ・If there is no outstanding balance owed for the purchased model (the model was purchased with a lump payment, or a lump payment was made to settle the outstanding balance)
        • * The shop performs unlocking free of charge when the model is purchased, if SIM unlocking is requested at the time of purchase.
      • ・If installment payments for the au mobile phone are set to a credit card
        • * Unlocking requests are accepted free of charge at the shop.

Important Considerations Regarding SIM Unlocking

Data stored on au mobile phones or other devices

SIM unlocking may result in the alteration or loss of data (such as address books, image data, content and e-mails) and settings information. au assumes no responsibility for any such alteration or loss which may occur as a result of SIM unlocking, and customers are encouraged to backup their data on an external medium (SD card, PC, etc.).

Using another company's SIM card in an au mobile phone or device

<Device Operation>

au makes no guarantee regarding the operation of any au mobile phone which is being used with another company's SIM card.
In addition, restrictions may apply to the usage of services, functions, applications (both those pre-installed on your phone and those which you have downloaded), content, etc.

<Usage Fees>

The usage fees established by the SIM card provider shall apply.
For details about usage fees, please contact your telecommunications service provider directly.

<Phone/Device Repairs>

Even if you performed SIM unlocking, au will still handle repair issues for the physical au phone/device.

  • *Depending on the nature of the problem, you may be directed to contact your telecommunications service provider.
  • *However, if you do not have a subscriber agreement with au, you cannot receive a temporary replacement phone while your phone is being repaired. Also, please understand that even if you do have a subscriber agreement with au, the temporary replacement phone loaned to you will not be SIM-unlocked.

Handling of Personal Information

The personal information obtained by au as part of the SIM unlocking process will be used to perform confirmation at the time the SIM unlocking request is made, to facilitate management of the SIM-unlocked au mobile phone or device, to respond to inquiries and requests and to perform other relevant duties and services. This personal information shall be handled in accordance with au's separately established privacy policy.

Exemption of Liability

Excluding cases of willful or gross negligence, au is neither financially liable nor in any way responsible for anything which may result from SIM-unlocking an au mobile phone or using a SIM-unlocked au mobile phone with another company's SIM card.

Other

  • An application to perform SIM unlocking cannot be canceled after it has been completed.
  • A SIM-unlocked mobile phone cannot be reverted to a SIM-locked state.

Setting up your au mobile phone following completion of the SIM-unlocking application

Set-up for Android

<Set-up Procedure>

  1. 1.Insert your chosen service provider's SIM card into your au mobile phone
  2. 2.Turn on your au mobile phone and connect to Wi-Fi
  3. 3.Perform the following to update your settings file
    1. Settings
    2. Device Information
    3. SIM Card Status
    4. Update SIM Card Status
    • * Operations may differ depending on your phone model. Check the section on "SIM Unlocking" in your user manual to find out the SIM unlocking operations for your phone model.
  4. 4.After downloading the settings file, restart your mobile phone
  5. 5.Set-up is complete

<Checking the Setting Status>

Check the "Status" shown on the SIM Card Status screen (the third operational screen above).

  • If "Authorized": Your phone can be used
  • If "Unauthorized": Your phone cannot be used
    • * Setting status terminology may differ depending on your phone model.

Set-up for iPhone

  • 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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