In fact, the small round hole at the bottom of your phone serves as a secondary microphone, contributing significantly to the dual microphone system’s noise reduction. Most current smartphones include a noise-cancelling microphone. This microphone will improve the clarity and quality of your calls. Without it, your voice would not be clearly transferred to the listener.

Even in busy situations, this little hole allows you to clearly hear and convey your voice. Placing the microphone near your mouth improves voice capture and transmission, resulting in higher call quality.

Sound waves travel through this microphone and are amplified, allowing the listener on the other end to hear clearer sounds. Without the secondary microphone, call quality would suffer dramatically.

Today, most mobile phones contain two noise-reducing microphones, one on top and one on the bottom. When the phone is exposed to external noise, the secondary microphone lowers it, leaving only the call audio. This technology, known as “dual microphone noise reduction,” improves call clarity even in busy surroundings.