How to enable Two-Factor Authentication for Yahoo Mail [JP]
Before you can set up 2-Step Verification for your Yahoo Mail [JP] account you'll need to download Authenticator App on your device by searching for it in your Apple device's App Store, click on the button below Download on the App Store or scan the QR Code.
If you have lost access to your two-factor authentication (2FA) code generator, please get in touch with the Yahoo Mail [JP] support team for assistance.