Lock The Keys; Display Indicators - Nokia E51 User Manual

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provider and configure some settings automatically. You can
also contact your service provider for the correct settings.
You can switch the device on with no SIM card inserted, in
which case the device starts up in the offline mode, and you
cannot use the network-dependent phone functions.
To switch the device off, press and hold the power key.

Lock the keys

The keypad of your device locks automatically to prevent the
keys from being accidentally pressed. To change the period
after which the keypad is locked, select
Settings General
> >
Keypad autolock period.
18
Menu
>
Security Phone and SIM card
>
To lock the keys manually in the standby mode, press the left
selection key and *.
To unlock the keys, press the left
selection key and *.
Tip: To lock the keys in the
menu or in an open
application, press the power
key briefly, and select
keypad. To unlock, press
the left selection key and *.
Tools
>
>

Display indicators

The device is being used in a GSM network (network
service). The bar next to the icon indicates the signal strength
of the network at your current location. The higher the bar,
the stronger the signal.
The device is being used in a UMTS network (network
service).
Lock
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