I would like to change my 4-digit PIN code in the My au app
The 4-digit PIN code you set up when you made the contract with au can be changed online on the "My Page" [マイページ] of the My au app.
Please see below for detailed instructions.
Important note
When changing your 4-digit PIN code, your current one is required. Please note that if you enter the incorrect PIN code three times on the same day, you will not be able to change your PIN code until the next day.
I would like to change my 4-digit PIN code on the web
The 4-digit PIN code you set up when you made the contract with au can be changed online on the au ID Membership Information site.
Please see below for detailed instructions.
Important note
When changing your 4-digit PIN code, your current one is required. Please note that if you enter the incorrect PIN code three times on the same day, you will not be able to change your PIN code until the next day.