The small round hole in the phone has a very important function

Conclusion: The Unsung Hero of Your Smartphone

While small and often unnoticed, the secondary microphone is a vital component of modern smartphones. It works behind the scenes to ensure that your phone calls remain clear and of high quality, even in noisy settings. Thanks to the advancements in dual microphone noise reduction technology, the small round hole on your phone plays a big role in making sure your voice is heard loud and clear.