Samsung Galaxy S III User Manual page 73

My Call Sound
This option personalizeS the sounds you hear during a call
whether or not you are using a headset.
From the Call Settings screen, touch My call sound.
Configure the following options:
• My call sound settings: Select the sound quality: Off, Soft
sound, Clear sound, Optimized for left ear, or Optimized for
right ear.
• Personalize call sound: Touch this option, then follow the
instructions and prompts to set the phone to deliver optimum
sound for the left and right headset earphone.
Use Extra Volume for Calls
When enabled, the call screen displays a volume control, for
adjusting call volume during calls.
From the Call Settings screen, touch Use extra vol. for
calls to enable or disable the option.
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Increase Volume in Pocket
When enabled, the phone uses the proximity sensor to detect
when the phone is in a pocket or other close-fitting location
such as a purse or bag, and increases the volume for
incoming call ringtones.
From the Call Settings screen, touch Increase volume in
pocket to enable or disable the option.
Noise Reduction
Noise reduction suppresses background noise on your side of
the conversation during an active call.
From the Call Settings screen, touch Additional Settings
Noise reduction to enable or disable the option.