Why does the speaker of the POCO F6 Pro have airflow noise when using hands-free mode during VoIP?

If you notice airflow noise from the speaker of the POCO F6 Pro when using hands-free mode during VoIP (Voice over Internet Protocol) calls, it is due to the fast airflow created by the high volume. When the speaker's volume is loud, the rapid airflow through the sound hole can produce frictional noise, which is the airflow sound you hear.
To mitigate this issue, it is recommended to lower the speaker’s volume to reduce the airflow speed and consequently the frictional noise. Additionally, avoid placing the sound hole directly close to your ear, as this can amplify the perceived noise. Adjusting the volume and positioning can help provide a clearer and more comfortable audio experience during hands-free VoIP calls.
If the problem persists despite these adjustments, consider checking for any obstructions in the speaker or consulting the local after-sales center for further assistance.