The Role of A Hole Next To Camera
You must have gazed at the camera of the iPhone and noticed that there is a diminutive aperture right by the camera lens and pondered why it is there. Well we will dismiss the hypothesis that it permits Facebook to eavesdrop on people.
In reality it is a microphone. In fact there are three microphones on almost every smartphone; one on the bottom edge of the phone one beneath the speaker grille and one adjacent to the camera lens.