Nokia X500 - Manual (Page 27)

UPIN code — This code may be supplied with the USIM card. The USIM card is an
enhanced version of the SIM card and is supported by 3G mobile phones.
PIN2 code — This code (4 - 8 digits) is supplied with some SIM cards, and is required
to access some functions in your device.
Lock code (also known as security code) — The lock code helps you to protect your
device against unauthorised 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.
Prolong battery life
Many features in your device increase the demand on battery power and reduce the
battery life time. To save battery power, note 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.
Turn Bluetooth technology off when you do not need it.
• 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 packet data connection. To prolong the operating time of
your device, select Packet data connection > When needed .
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