Nokia N86 8MP - Manual (Page 21)

● Lock code (also known as security code) — The lock
code helps you to protect your device against
unauthorized use. The preset code is 12345. You can
create and change the code, and set the device to
request the code. Keep the new code secret and in
a safe place separate from your device. If you forget
the code and your device is locked, your device will
require service. 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 network service provider
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 network
service provider whose USIM card is in your device.
● International Mobile Equipment Identity (IMEI)
number — This number (15 or 17 digits) is used to
identify valid devices on the GSM network. Devices
that are, for example, stolen, can be blocked from
accessing the network. The IMEI number for your
device can be found under the battery.
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 Menu >
Tools > Settings and Connection > Packet
data > Packet data connection > When
needed .
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