If I receive a call on loudspeaker mode then why doesn't the caller hear his own voice as the sound (loud enough) is received by the mic of my phone too? -
How to find out why the mic/speaker on my Samsung A12 is suddenly making static sounds and echoing my voice back to me at random - Quora
![SOLVED] Internal built-in microphone not working when external microphone jack plugged in - Linux Mint Forums SOLVED] Internal built-in microphone not working when external microphone jack plugged in - Linux Mint Forums](https://i.ibb.co/cJ3ywPf/alsa.png)