Mic sound muffled problem with the Voice memos app and secondary apps on my phone
Model - 7 Plus
Software Version - 14.6 (18F72)
I was trying to call a friend using WhatsApp and he saw a mic problem on my phone. It is not completely silence. The volume on the mic is very low. I thought cleaning the mic or replacing the mic would solve this problem. Before that I tried a normal phone call and I saw that the mic was working well.
So I think it's not a mic problem. This mic problem happens in apps like WhatsApp, Telegram including Voice Memos app.
Then I fully reset phone and tried Voice Memos app without doing anything. Also a normal phone call. Problem was not solved. So it may not be a problem caused by changing the settings.
How do I fix it? Is it a software bug?
iPhone 7 Plus, iOS 14