what is the tiny hole on an iphone
Answer Wiki. You might have noticed a small tiny black hole next to the camera on the back of the iPhone. That tiny hole is actually a secondary microphone. But this mic is not for voice recording, but for noise cancellation. When you speak on the phone with someone on a call, there may be background noises like those of cars and bikes, if you are on the road or the sounds of other people talking, etc.