Nokia N97 - Manual (Page 14)

code and your device is locked, your device will
require service and additional charges may apply.
Additional charges may apply, and all the personal
data in your device may be deleted. For more
information, contact a Nokia Care point or your
device dealer.
● Personal Unblocking Key (PUK) code and PUK2
code — These codes (8 digits) are required to
change a blocked PIN code or PIN2 code,
respectively. If the codes are not supplied with the
SIM card, contact the operator whose SIM card is in
your device.
● UPUK code — This code (8 digits) is required to
change a blocked UPIN code. If the code is not
supplied with the USIM card, contact the operator
whose USIM card is in your device.
Remote lock
To prevent unauthorised use of your device, you can
lock your device and memory card remotely using a
text message. You must define the message text, and
to lock your device, send that text message to your
device. To unlock your device, you need the lock code.
To enable remote locking, and to define the text
message, select Menu > Settings and Phone >
Phone mgmt. > Security settings > Phone and
SIM card > Remote phone locking > Enabled . Tap
the text input field to enter the text message content
(5-20 characters), select , and verify the message.
Enter the lock code.
Prolong battery life
Many features in your device increase the demand on
battery power and reduce the battery life time. To save
battery power, observe the following:
● Features that use Bluetooth technology, or allowing
such features to run in the background while using
other features, increase the demand on battery
power. Switch off Bluetooth when you do not need
it.
● Features that use wireless LAN (WLAN), or allowing
such features to run in the background while using
other features, increase the demand on battery
power. The WLAN on your Nokia device switches off
when you are not trying to connect, not connected
to another access point, or not scanning for
available networks. To further reduce battery
consumption, you can specify that your device not
scan, or scans less often, for available networks in
the background.
● If you have set Packet data connection to When
available in connection settings, and there is no
packet data coverage (GPRS), the device periodically
tries to establish a GPRS connection. To prolong the
operating time of your device, select Packet data
connection > When needed .
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