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Prolong battery life – Nokia X500 User Manual

Page 27

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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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