Nokia 5500, Руководство пользователя

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T o o l s
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correct lock code. To turn off the
autolock period, select
None .
Lock if SIM changed — to set the
phone to prompt for the lock code
when an unknown, new SIM card
is inserted into your phone. The
phone keeps a list of SIM cards
that are recognized as the owner
cards.
Closed user group (network
service) — to specify a group of
people whom you can call and
who can call you. For more
information, contact your network
operator or service provider. To
activate the default group agreed
on with the network operator,
select
Default . If you want to use
another group (you need to know
the group index number), select
On .
When security features that
restrict calls are in use (such as
call barring, closed user group, and
fixed dialing) calls may be possible
to the official emergency number
programmed into your device.
Confirm SIM services (network
service) — to set the phone to
display confirmation messages
when you use a SIM card service
Certificate management
Digital certificates do not
guarantee safety: they are used to
verify the origins of software.
To view a list of authority
certificates that have been stored
in your phone, select
Menu >
Tools > Settings > Security >
Certif. management . To see a list
of personal certificates if
available, scroll right.
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.