LG LM-G850EMW Bedienungsanleitung Seite 47

There are two microphones built into this product. Be careful not to cover
the microphones. While you are talking on the phone, do not cover the
microphone with your hand or fingers.
Do not use a phone case that is not a genuine product or cover the
microphone with accessories, tape, etc.
Hold the product correctly as shown in the image when you are using it.
Good example
Microphone
Basic Functions
Microphone
Do not cover the microphone.
Bad example
Do not cover
the
microphone.
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