LG W3000 Guide De L'utilisateur page 118

Overview
Key Description
Used to enter the vibration mode by pressing this key
for a long time
Used to call by voice dial with long pressing this key.
This key is also used as Ear mic. hook key when
connecting Ear mic.
END/PWR Key
Used to end or reject a call. This key is also used as
Power Key. Pressing and holding this key for a few
seconds.
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