When on the phone with anyone, they can't really hear me. I'm not garbled, its just I sound really quiet as if I'm talking into the phone from a distance. It's a 6 Plus. Voice memos sound fine. Siri works fine. Video recording audio sounds fine. The problem mainly occurs when I have my phone to my ear talking to someone. If I put them on speaker, they say I sound much better. I've removed all cables and screen protectors. Any ideas of what the issue could be? Thanks!