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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.