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How to check a charge I do not recall making

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

How to check my monthly charges breakdown

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

  • Logging in with your au ID is required.

If you are not sure how to check your billing details, please refer to the following pages.

For your reference

For au PAY charges

【au PAY】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.

Important note

  • For payments made with au PAY Prepaid Card, the merchant’s name on your statement may be displayed as "Brand Prepaid Merchant" in some cases. The actual merchant’s name will appear approximately 14 business days after the transaction.

If the problem persists even after checking the usage history

For your reference

For au PAY (au Easy Payment) charges

【au PAY (au Easy Payment)】How to check a charge I do not recognize

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

  • The usage details for this month are based on information prior to billing being finalized and may differ from the actual billing amount.

In addition, please also check whether the charges may be due to discounts or free trial periods on your subscribed services having ended, or to payments for online shopping and in-app or in-game purchases.

For your reference

For installment payment charges

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

How to check a charge for a phone number I do not recognize

This could be the phone number of a tablet or data transmission device (router). 

Please check the phone number on your 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)

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 by 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

How to check the reason for unrecognized charges or bills that are 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.