is anyone else having this issue? When I am talking to people on the phone, people say I sound really muffled. They can't understand me. But, when I switch to speaker or I'm talking though Bluetooth in my car, I sound ok. It only happens when I am holding the phone to my ear and talking through the mic. There's nothing in the mic hole, I'm not holding my finger over the mic, this happens if I have my case on it or if the case is off. Please let me know if you have any advice. Thanks!