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■ Browser security
Security features may be required for some services, such as online
banking or shopping. For such connections you need security
certificates and possibly a 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 service provider. Authority certificates and user certificates
may also be saved in the security module by the service provider.
To view the list of the authority or user certificates downloaded into
your phone, select Menu > Settings > Security > Authority certificates
or User certificates.