Nokia N95 - Manual (Page 96)

list of SIM cards that are recognised as the owner’s
cards.
● Closed user group — You can specify a group of
people to whom you can call and who can call you
(network service).
● Confirm SIM services — You can set the device to
display confirmation messages when you are using
a SIM card service (network service).
Certificate management
Press , and select Tools > Settings > General >
Security > Certificate management .
Digital certificates do not guarantee safety; they are
used to verify the origin of software.
In the certificate management main view, you can see
a list of authority certificates that are stored in your
device. Scroll right to see a list of personal certificates,
if available.
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 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.
For more information, see the extended user guide on
the product support pages of the Nokia website.
Restore original settings
Press , and select Tools > Settings > General >
Factory settings .
You can reset some of the settings to their original
values. To do this, you need the lock code.
After resetting, the device may take a longer time to
power on. Documents and files are unaffected.
Positioning settings
Press , and select Tools > Settings > General >
Positioning . 96
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ttings