Copyright © 2004 Nokia. All rights reserved.Tools76Confirm SIM services (Network Service) - To set the phone to display confirmation messageswhen you are using a SIM card service.Certif. managementOptions in thecertificate managementmain view: Certificatedetails, Delete, Trustsettings, Mark/Unmark,Help, and Exit.In the Certificate management main view, you can see a list of authority certificates thathave been stored in your phone. Press to see a list of personal certificates, if available.Authority certificates are used by some browser services, such as banking services, forchecking signatures or server certificates or other authority certificates.Server certificates are used to improve security in the connection between the phone andthe gateway. The phone receives the server certificate from the service provider before theconnection is established and its validity is checked using the authority certificates savedin the phone. Server certificates are not saved.Server certificates may be needed when you, for example:• want to connect to an online bank or another site or remote server for actions thatinvolve transferring confidential information, or• want to decrease the risk of viruses or other malicious software and be sure of theauthenticity of software when downloading and installing software.Important: Note that even if the use of certificates makes the risks involved inremote connections and software installation considerably smaller, they must beused correctly in order to benefit from increased security. The existence of acertificate does not offer any protection by itself; the certificate manager must containcorrect, authentic, or trusted certificates for increased security to be available. Certificateshave a restricted lifetime. If Expired certificate or Certificate not valid yet is shown even if thecertificate 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 theowner of the certificate and that the certificate really belongs to the listed owner.