LG B2100 User Manual page 172

Key Description
Key Description
You can delete the characters, go back
to the menu. In addition, you can view
voice memo list when you press this
key shortly in standby mode. Long press
of this key in standby mode starts voice
memo recording.
Right side of the phone
Key Description
Press and hold down this key to open
the camera module. And press this key
to take a shot.
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B2100 User Guide