Nokia 6630

Page 103
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Tools
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Copyright © 2005 Nokia. All rights reserved.
Closed user group
 (network service) - To specify a group of people to whom you can call 
and who can call you.
Confirm SIM services
 (network service) - To set the phone to display confirmation 
messages when you are using a SIM card service.
Certif. management
Digital certificates do not guarantee safety; they are used to verify the origins of software.
In the Certificate management main view, you can see a list of authority certificates that 
have been stored in your phone. Press 
 to see a list of personal certificates, if available.
 Glossary: Digital 
certificates are used to 
verify the origin of the 
XHTML or WML pages and 
installed software. 
However, they can only be 
trusted if the origin of the 
certificate is known to be 
authentic. 
Digital certificates should be used if you want to connect to an online bank or another site 
or remote server for actions that involve transferring confidential information. They should 
also be used if you want to reduce the risk of viruses or other malicious software and be 
sure of the authenticity of software when downloading and installing software.
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 phone are correct.
Viewing certificate details - checking authenticity
You can only be sure of the correct identity of a server when the signature and the period 
of validity of a server certificate have been checked. 
You will be notified on the phone display if the identity of the server is not authentic or if 
you do not have the correct security certificate in your phone.
R0915_en.book  Page 103  Tuesday, February 8, 2005  11:46 AM
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