The audio in a video is just as important as the footage you shoot. The quality of your smartphone's internal microphone is often inadequate. That's why it's essential to use an external microphone for creating professional-quality video with your smartphone. A lapel microphone makes recording high-quality audio easy. But how does a lapel microphone work? This article answers that question. No time or inclination to read? Watch the video. Navigate quickly What is a lapel microphone? How do you place the lapel microphone correctly? How do you connect a lapel microphone?