The phone notifies you if the identity of the server is not authentic or if you do not have the correct security certificate in your phone.

To check certificate details, scroll to a certificate, and select Options > Certificate details. While opening the certificate details, the phone checks the validity of the certificate and one of the following notes may appear:

Expired certificate—The validity period has ended for the selected certificate.

Certificate not valid yet—The validity period has not yet begun for the selected certificate.

Certificate corrupted—The certificate cannot be used. Contact the certificate issuer.

Certificate not trusted—You have not set any application to use the certificate.

Change the trust settings

Before changing any certificate settings, you must make sure that you really trust the owner of the certificate and that the certificate really belongs to the listed owner.

Scroll to an authority certificate, and select Options > Trust settings. Depending on the certificate, a list of the applications that can use the selected certificate is shown.

Security module

View or edit security modules.

Factory settings

Reset some of the settings to their original values. You need the lock code. See ”Lock code,” p. 28.

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Nokia 6120 classic manual Factory settings, Change the trust settings, Security module, View or edit security modules