LG G3 User Manual page 67

To decline a call and divert it to voicemail
Swipe the Decline icon
NOTE To silence the ringer, press either of the Volume Keys (on the back of the phone).
To decline a call and send a text message
To display the decline with message option on the incoming call
screen,enable it in the Settings menu.
Swipe the Decline with message icon
Tap the text message you want to send in place of answering the call.
Swipe the Answer
icon in any direction
to answer the call.
in any direction to decline the call.
Swipe the Decline with message icon in
any direction to send a quick message to
the caller and forward them to your
voicemail.
Swipe the Decline
icon in any direction
to ignore the call.
in any direction.
Calls
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