You might be using an iPhone since it have been launch but there are somethings that you must know about Apple’s flagship product.  In fact, you may be calling yourself a pro in using and understanding iPhone, yet there are a certain features on your smartphone and their uses that you may not know. One such feature is near the camera on your iPhone. Have your ever noticed the tiny black hole between your iPhone camera and flash?

Basically, every iPhone since the launch of iPhone 5 have a tiny black dot between the lens and flash. Have you ever wondered why is it there and what does it do?

This tiny hole is actually a microphone. Yeah, you read it right. Technically, it is not a microphone that would listen to your voice but it is for noise cancellation. This microphone can nearly eliminate background noises so that the caller on the other end hears only crystal clear voice. It also helps to record your voice without any filler, make Siri’s recognition of your accent even better and while recording HD videos.

The iPhone actually have three microphones, one at the bottom, one on the back and one at the front often hidden under the same grill for the phone speaker, as it is not active during normal phone conversation. The reason behind placing two microphones at either ends of the phone is stereo audio recording while recording videos, which gives a better audio judgment while playing it on a stereo sound system.

So, you may wonder why there are three microphones. While the bottom and front ones are used for own voice and hearing purpose, the one at the back is useful for video recording and for digitally removing background noise when you’re on a phone or FaceTime call. It also helps a little bit when clicking pictures, by eliminating pixel noise.    via techworm