random high pitched squeel from phone

[Anubis]

happens when talking on it, its really random sometimes it happens a lot sometimes not at all but its loud and ear piercing, comes from the mic obviously

LG G3 - pretty sure this happened when i had my GS4 as well, on VZW. anyone have any idea WTF is going on

 

[JeffMD]

I'm not sure why you are pointing at the mic when for the life time of the phone, you never here what the mic picks up. -_-

I have a couple ideas, all pointing at electronics you can't replace. Time to pickup a new phone. :/