Nokia N97 - Manual (Page 140)

Make sure that the device battery has enough power,
or connect the charger before starting the update.
Security settings
Phone and SIM
Select Menu > Settings and Phone > Phone
mgmt. > Security settings > Phone and SIM card .
Select from the following:
● PIN code request — When active, the code is
requested each time the device is switched on.
Deactivating the PIN code request may not be
allowed by some SIM cards.
● PIN code , PIN2 code , and Lock code — You can
change the PIN code, PIN2 code, and lock code.
These codes can only include numbers from 0 to 9.
Avoid using access codes similar to the emergency
numbers to prevent accidental dialing of the
emergency number. If you forget the PIN or PIN2
code, contact your service provider. If you forget the
lock code, contact a Nokia Care point or your service
provider.
● Phone autolock period — To avoid unauthorized
use, you can set a time-out after which the device
automatically locks. A locked device cannot be used
until the correct lock code is entered. To turn off the
autolock period, select None .
● Lock if SIM card changed — You can set the device
to ask for the lock code when an unknown SIM card
is inserted into your device. The device maintains a
list of SIM cards that are recognized as the owner’s
cards.
● Remote phone locking — Enable or disable
remote lock.
● 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
Select Menu > Settings and Phone > Phone
mgmt. > Security settings > Certificate
management .
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.
Select from the following:
● Authority certificates — View and edit authority
certificates.
● Trusted site certificates — View and edit trusted
site certificates.
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