Sim services – Nokia 7510 Supernova User Manual

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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.

15. SIM services

Your SIM card may provide additional services. You can access this menu only if it is

supported by your SIM card. The name and contents of the menu depend on the

available services.
To show the confirmation messages sent between your phone and the network

when you are using the SIM services, select Menu > Settings > Phone > Confirm

SIM actions.
Accessing these services may involve sending messages or making a phone call for

which you may be charged.