You'd think they would put that in the icon glossary. So I need to push that icon to cancel background noise or does symbol tell me noise cancellation is already on?
Funny, the phone itself has an icon glossary but it isn't there. Even in manual I found no explanation of how to engage noise cancellation nor exactly what it does. Under in call sound it also doesn't explain adapt sound vs clear sound nor which is the default.
Beamed from my Galaxy Note 3
What happens if you touch the icon? Otherwise, page 282 of the manual describes going into the Call Settings and tapping Noise Reduction to turn it on.