People sound muffled when I answer my phone
Hi-
I have been having issues lately where if someone calls me or I call them, when they talk to me it sounds very muffled and hard to understand them. I have tried using a duster can that you use on computers on the ear piece and it helps for a little bit and then back to the same muffle the next day if I'm on the phone. Can someone help?
thanks!
iPhone 5c, iOS 8.4