Smartphones are no longer a luxury; they are a necessity. With a smartphone in hand, whether for official or personal use, any task can be accomplished in the blink of an eye. Capitalizing on this, mobile manufacturers introduce phones to the market daily, integrating new technologies and features. But that’s about the phone itself. Have you ever closely examined the phone you hold?

Have you ever noticed a very tiny hole near the earphone port, or the charging port, or even beside the camera? Do you know why this hole is there and what its function is?

This small hole is located at the bottom of the smartphone. You can find it below the phone’s charging port. Though it may seem insignificant, it is actually very useful. It enhances your call experience. This hole is essentially a type of microphone.

However, it is not a typical microphone. It is a completely different kind of microphone called a ‘rear microphone’. It is also known as a noise-canceling microphone. This is why you can make high-quality calls in peace. Without it, it would be difficult for you to converse.

If you consider this hole small or think this feature doesn’t do much, then discard that misconception. Due to this tiny space, the surrounding noise can be completely eliminated. With the help of this hole, you will be able to hear the other person’s voice clearly on a call, even if you are in a very noisy environment. Similarly, the other person will be able to hear your voice clearly as well.

This feature is present in every smartphone. If a phone lacks it, making calls would become very difficult.