Start browser and access site below:
Tap au Smart Pass Cancel.
Swipe up.
Continue by tapping "退会手続きを続ける (Continue to cancel)".
Tap bottom "退会する (Cancel)".
If below screen appears, enter your PIN number (4 digits) and click "OK".
You completed your cancellation.
Tap "auスマートパストップに戻る (Return to top of au Smart Pass page)".
Start browser and access site below:
Tap au Smart Pass (Cancel).
Swipe up.
Continue by tapping "退会手続きを続ける (Continue to cancel)".
Tap "退会する (Cancel)".
If below screen appears, enter your PIN number (4 digits) and click "OK".
Your cancellation is complete. Tap "OK".