Nokia N78 User Guide - Page 17
Prolong battery life - features
UPC - 758478014714
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Find help forget the code and your device is locked, your when you are not trying to connect, not connected device will require service and additional charges to an access point, or not scanning for available may apply. For more information, contact a Nokia networks. To further reduce battery consumption, Care point or your device dealer. you can specify that your device does not scan, or ● Personal Unblocking Key (PUK) code and PUK2 scans less often, for available networks in the code - These codes (8 digits) are required to background. See "Wireless LAN", p. 93. When Scan change a blocked PIN code or PIN2 code, for networks is set to Never, the WLAN availability respectively. If the codes are not supplied with the icon is not shown in the standby mode. However, SIM card, contact the operator whose SIM card is in you can still manually scan for available WLAN your device. networks and connect to WLAN networks as usual. ● 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. ● 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 Prolong battery life Packet data connection > When needed. Many features in your device increase the demand on battery power and reduce the battery life time. To save battery power, note the following: ● The Maps application downloads new map information when you scroll to new areas on the map, which increases the demand on battery power. You can prevent the automatic download of new ● Features that use Bluetooth technology, or allowing maps. See "Maps", p. 37. 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 the signal strength of the cellular network varies much in your area, your device must scan for the available network repeatedly. This increases the demand on battery power. ● 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. WLAN on your Nokia device switches off If the network mode is set to dual mode in the network settings, the device searches for the UMTS network. To only use the GSM network, press , 17