<p>The microphone on a mobile phone does not have the functions of amplifying, increasing volume, or shouting. When the microphone is plugged in, the phone will not play sound externally, and can only record audio or video and save it for listening. The characteristic is to pick up the sound of catching feet carefully. Android phones with round hole earphones (3.5mm) cannot use Type-C microphones, and the Type-C port is suitable for phones with only one C-port.</p>