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Procedures for discontinuing the use of a E-Certificate for which a smartphone for smartphones has been registered

When a E-Certificate for which a smartphone smartphone has been registered is sold or repaired, or is lost or stolen, it is necessary for the user to invalidate or temporarily suspend the E-Certificate.

Since the staff of sales stores and the like cannot respond, please see Inquiries about My Number System for any questions. In addition, please check whether your smartphone is compatible with E-Certificate for smartphones by checking smartphone that is compatible with E-Certificate for smartphones.
In addition, for information on whether or not you have registered a E-Certificate for smartphones, please see Mynaportal: Checking the Validity of a E-Certificate for Smartphones where procedures are performed when a lost smartphone is found.

Expiration of E-Certificate for Smartphones

Under the law, when you stop using a E-Certificate with a smartphone smartphone registered due to a model change, trade-in, sale, disposal, or malfunction, you are required to invalidate the E-Certificate by yourself.
By taking the revocation procedure from the E-Certificate where the smartphone smartphone is registered, the E-Certificate will be revoked and the related information in the smartphone will also be deleted.

If the E-Certificate revocation procedure is not performed appropriately, the smartphone E-Certificate will remain in smartphone. (It will not be deleted by initializing the device in smartphone.)
Even if the smartphone remains, it will not be abused unless the smartphone is properly managed or the password is known. However, in order to eliminate any risk due to data remaining in the E-Certificate, it is necessary to ensure that the smartphone for which the E-Certificate for smartphones has been registered is revoked when the use of the mobile phone is stopped.

How to Revoke a Smartphone E-Certificate

Please invalidate the registered smartphone E-Certificate from My Menu of the Mynaportal app. For operation methods, please see Mynaportal: Suspend the use of the smartphone E-Certificate (Invalidation) where procedures are performed when a lost smartphone is found.

You do not know the password required for the revocation procedure.

The password (6 to 16 alphanumeric characters) set at the time of registration of the smartphone E-Certificate is required for the expiration procedure. If you forget the password, please initialize and reset it using the My Number Card and perform the expiration procedure.
For how to initialize, see Mynaportal: to initialize your password, and for how to reset your password, see Mynaportal: where procedures are performed when a lost smartphone is found.

If you cannot initialize or reset the password, such as when you do not have the My Number Card at hand, uninstall the E-Certificate application while the smartphone in which the Mynaportal for smartphones is registered is connected to the network. The E-Certificate will expire, and the related information in the smartphone will also be deleted.

When the terminal is initialized before the revocation procedure is performed

If you have initialized the E-Certificate in which the smartphone for smartphones has been registered, please reinstall the Mynaportal app and open My Page of the smartphone app while the Mynaportal is connected to the network. The E-Certificate for smartphones will be deleted (*) and you will not be able to use it.

*By installing the Mynaportal app again, the remaining old E-Certificate will be deleted.

In case that Terminals have been sold without any procedures for malfunction or invalidation

In order to prevent unauthorized use of E-Certificate, please temporarily suspend the use of E-Certificate for smartphones.

Temporary Suspension of E-Certificate for Smartphones

If you have lost or stolen a E-Certificate that has been registered as a smartphone smartphone, you need to temporarily stop using it in order to prevent unauthorized use of the E-Certificate.

How to Suspend Use of E-Certificate for Smartphones

My Number General Toll-free Number, , from a representative such as a family member living in Japan and temporarily suspend the use of the E-Certificate.
In order to resume use if a smartphone is found after a temporary suspension due to a lost or stolen in smartphone, please refer to Mynaportal: where procedures are performed when a lost smartphone is found.

Overseas in lost or stolen

Basically, the My Number general toll-free number cannot connect calls from overseas.
If a E-Certificate registered as a smartphone smartphone overseas is lost or stolen, please contact the My Number General Toll-free Number, , from a representative such as a family member living in Japan and temporarily suspend the use of the E-Certificate.