You can change the contract address and billing address of your au phone through My au (Web).
Please see below for detailed instructions.
Please turn off the Wi-Fi connection on your applicable mobile phone or smartphone before proceeding.
After obtaining the consent of the billing holder, the contract holder should select "Change billing address" [請求先住所の変更] on the address change screen of My au (Web), and request the change form via the "Application Form Mail Service" [申込書郵送サービス].
Enter the 4-digit PIN code set when you signed the contract, then tap on "Next" [次へ].
Tap on the procedure you wish to complete, and after confirming the selection, tap on "Next" [次へ].
Enter your new zip code and tap on "Next" [次へ].
Enter your new address and contact information, then tap on "Next" [次へ].
Confirm the changes and tap on "Apply with this information" [この内容で申し込む].
The procedure is now complete.
If you change your address at the beginning of the month, your bills may be delivered to your new address starting from the same month.
Please follow the instructions on the following page to complete the procedure.
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