LG Voyager VX-10000

I'm wondering if anyone else is experiencing a hissing sound in the background when making calls and if there sound is crappy when talking to someone? I have my volume turned all the way down, but sometimes have to ask people to repeat themselves several times because I can't understand them.
I have the latest SW update, I'm just thinking it might be the phone and maybe get a replacement on it? Thanks in advance from anyone with info. 😁