I would like to change the credit card information of my au ID
You can change it from the au ID Membership Information Site [au ID会員情報サイト]. Please see below for detailed instructions.
Important note
To change your membership information, you need to log in with your current au ID and password. If you do not know your current au ID or password, please see below.
Steps
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1
- Login with au ID is required
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2
Tap on the [MENU] icon in the upper right corner of the screen, and tap on "au ID membership information" [au ID会員情報].
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3
Tap on "Register" [登録] or "Change" [変更] for credit card information.
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4
Enter the credit card number, expiration date, and security code, then tap on "Next" [次へ].
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5
Confirm the information of the card entered and tap on "Register" [登録する] or "Change" [変更する].
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