mean of hole

Why is there this small hole at the bottom of the smartphone? Know what will happen if it is removed

Noise Cancellation: Most Android smartphones have a hole at the bottom. However, hardly anyone knows why this hole exists and what is its use. Noise Cancellation: The small hole at the bottom of the smartphone, which people often mistake for a microphone, is actually a “microphone grill”. This hole covers the “noise cancellation microphone”, which…