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I would like to know how to check a charge I do not recall making

First, please check the breakdown of your charges through the web

I would like to check my monthly bill breakdown

You can check the details of your monthly bill on My au (Web).

  • Logging in with your au ID is required.

Please see the following page for instructions on how to check your billing details.

For your reference

For au PAY charges

【au PAY】I would like to know how to check a charge I do not recognize

Please check your au PAY transaction history to confirm whether the transactions were made by you.

If the issue is not resolved after verifying the details

For your reference

For au PAY (au Easy Payment) charges

【au PAY (au Easy Payment)】I would like to know how to check a charge I do not recognize

Charges may arise due to the end of discounts or free periods for services in use, payments for online shopping, or in-app purchases for apps and games.

Please check the details in your au PAY (au Easy Payment) transaction history.

For your reference

For installment payment charges

I would like to know how to verify a charge for a device installment contract I do not recall making

Please check if you have any remaining payments for the model, peripherals, security software, etc. that you purchased on installment plans.

For your reference

  • If you did not settle your installment amount in a lump sum, you will continue to be charged for the remaining amount with the same payment method as during your contract, even after canceling your contract.

For charges of an unknown phone number

I would like to know how to check a charge of a phone number I do not recognize

There is a possibility that this is the phone number for the tablet or data communication device (router).

Please check the phone number associated with the device.

For your reference

  • Telephone numbers are also assigned to tablets and data transmission devices other than mobile phones.

For charges of fixed-line phones (0077/001)

I would like to know how to check a landline charge I do not recognize

If you call a phone number with prefix numbers 0077 or 001, charges will be incurred from KDDI.

If calls were made unintentionally using these prefix numbers, it is possible that your phone is set to automatically add them.

To disable this setting, please refer to the user manual for your phone or contact the phone manufacturer.

Regarding KDDI’s billing system

End of My Line service

  • My Line is a service that allows you to make calls by previously registering your preferred telephone company, without having to dial that company prefix.
  • The telephone company selection service My Line ended in January, 2024.

How termination of My Line affects

  • While using My Line, the charges were billed from the registered telephone company.
  • With the termination of My Line service, if the prefix number 0077 or 001 from KDDI has been added in your phone's settings, charges will be incurred from KDDI.
  • This automatic addition is due to the ACR/LCR function (which automatically selects the pre-set telephone company when making a call) and is available in both built-in and external types.

    It is possible that this setting is causing unintended charges to be incurred from KDDI.

If you have checked all the above and still cannot find the cause

I would like to know how to check the reason for charges I do not recognize, or the bill is higher than expected

Please refer to the breakdown of your charges. If you find any unknown charge or the bill is higher than expected, please check the following page.

  • All of the indicated amounts exclude tax unless otherwise specified.