My LG Stylo 4 microphone has all the sudden stopped working and everything checks out

[inTHEMONEY9]

My LG Stylo 4 microphone is stopped working it but everything checks out on Doctor phone you go to turn it on and it goes BB and BB purple fast again/B]

 

[B. Diddy]

Welcome to Android Central! What do you mean by "it goes BB and BB purple fast again"?

Is the problem only when you're trying to use the primary phone mic on a call, or does it happen when you're trying to record audio or take a video with the camera app?