You may check your registered card online through your Sakura Mobile My Page.
How to check your registered card information
1. Log in to your Sakura Mobile My Page.
For first-time login
You will need to set your password to login for the first time.
Please click this link to set your password.
You will need to enter your registered email address, then you will
receive
an email with instructions to update your password.
2. Select the three dots in the top right corner
3. Select Account
4. View card information
