Nokia 3250

Page 96
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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.
View certificate details and check 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.
The phone notifies you if the identity of the server is not authentic or if 
you do not have the correct security certificate in your phone.
To check certificate details, scroll to a certificate, and select 
Options
> 
Certificate details
. While opening the certificate details, the phone 
checks the validity of the certificate, and one of the following notes may 
appear:
Expired certificate
— The validity period has ended for the selected 
certificate.
Certificate not valid yet
— The validity period has not yet begun for the 
selected certificate.
Certificate corrupted
— The certificate cannot be used. Contact the 
certificate issuer.
Certificate not trusted
— You have not set any application to use the 
certificate.
Change the trust settings
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.
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