Samsung SM-N960F User Manual page 91

Apps and features
Using earphones or a Bluetooth headset
Connect earphones or a Bluetooth headset to the device when your voice is not heard clearly
via the built-in microphone due to noisy environments. Press and hold the Call button on
earphones or a Bluetooth headset to launch Bixby and say your request to the microphone.
This feature may not be available or its method of use may vary depending on the
earphones and Bluetooth headset.
Call button
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