Samsung Galaxy Note 3 Instruction Manual page 202

Information
• To adjust the volume of the other party's
voice (call volume), press (Volume key)
during a call.
• The call screen is turned off automatically
when the screen is covered by making
the terminal close to your face (except
for attaching headset, etc.) or about 30
seconds are passed with no operation. To
display the call screen, keep the terminal
away from your face or press
Screen lock key)/ .
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(Power/
Calling