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security module, which may be available on your SIM card. For more information,
contact your service provider.
Security module
The security module improves security services for applications requiring a
browser connection, and allows you to use a digital signature. The security module
may contain certificates as well as private and public keys. The certificates are
saved in the security module by the service provider.
To view or change the security module settings, select
Menu
>
Settings
>
Security
>
Security module settings
.
Certificates
Important: Even if the use of certificates makes the risks involved in remote
connections and software installation considerably smaller, they must be used
correctly in order to benefit from increased security. The existence of a certificate
does not offer any protection by itself; the certificate manager must contain
correct, authentic, or trusted certificates for increased security to be available.
Certificates have a restricted lifetime. If Expired certificate or Certificate not valid
yet is shown even if the certificate should be valid, check that the current date
and time in your device are correct.
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.
There are three kinds of certificates: server certificates, authority
certificates, and user certificates. You may receive these certificates from your