Nokia 5250 - Manual (Page 104)

the correct security certificate in your device. For more information, contact your
service provider.
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.
Connectivity
Your device offers several options to connect to the internet or to another
compatible device or PC.
Data connections and access points
Your device supports packet data connections (network service), such as GPRS in
the GSM network.
To establish a data connection, an access point is required. You can define different
kinds of access points, such as the following:
•
MMS access point to send and receive multimedia messages
• Internet access point (IAP) to send and receive e-mail and connect to the
internet
104 Connectivity