Nokia 1680 - Manual (Page 18)

1 Network signal strength
2 Battery charge level
3 Network name or operator logo
4 Functions of selection keys
The left selection key is Go to for you to view the functions
in your personal shortcut list. When viewing the list, select
Options > Select options to view the available functions,
or select Options > Organise to arrange the functions in
your shortcut list.
Keypad lock (keyguard)
To prevent accidental keypresses, select Menu, and press
* within 3.5 seconds to lock the keypad.
To unlock the keypad, select Unlock, and press * within 1.5
seconds. If Security keyguard is on, enter the security
code when requested.
To set the keypad to lock automatically after a preset time
delay when the phone is in the standby mode, select
Menu > Settings > Phone > Automatic keyguard >
On.
To answer a call when the keypad is locked, press the call
key. When you end or reject the call, the keypad
automatically locks.
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