One such feature concerns the camera on your iPhone.
Have you ever noticed a tiny black hole between your iPhone camera and flash?
Have you ever wondered why it is there and what does it do?
This tiny hole is basically a microphone.
Yeah, you read it right.
This microphone can eliminate background noises so that the caller on the other end hears only crystal clear voice.
Okay, iPhone has three microphones!
Now, you may wonder why iPhone needs these three microphones.
It also helps a little bit when clicking pictures, by eliminating pixel noise.
There you have it.
The secret behind the secretive tiny hole on the back of an iPhone!
source: www.techworm.net