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Digital certificates do not guarantee safety; they are used to verify the origin of
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 device are correct.
Security module
The security module provides security services for different applications.
Select Menu > Settings and Phone > Phone mgmt. > Security > Security
module and the desired security module.
View security module details
Select Options > Security details.
Restore original settings
You may want to reset some of the settings to their original values. All active calls
and connections must be ended.
Select Menu > Settings and Phone > Phone mgmt. > Factory settings. To
restore the settings, you need to enter the lock code.
After resetting, the device may take a longer time to switch on. Documents and files
are unaffected.
134 Settings