Can I use second microphone for calls ?

[kico94]

I have a huawei p10 lite and recently people couldnt hear me well when talking on the phone. I checked via voice/video recording, whatsapp calling, using loud speaker etc and found out that main mic has problems, but secondary mic located on the top records good and clearly. So is there any app, mod or something I can do to make the secondary mic default for normal call speaking? I have warranty but where I live companies are crap, I am certain they will just say you broke it since I even tried it in front of them for call quality etc and it was ok back than.