I have never had a problem with my Samsung Galaxy Note 4 until a couple of days ago!! I have been receiving and making phone calls just fine. Until about 3 days ago I called my sister and she couldn't hear me at all but I could hear her just fine it was like my phone was on mute. So I called her back on speaker phone making sure that worked because nothing was pushed to silence my voice, and she actually heard me fine on speaker phone. Any one I call they can not hear me but I can hear them perfectly. Has anyone else had problems like this on their Note 4??? And if so could someone tell me Please what I can do to fix this??? I've seen other discussions on different websites and they say the same thing but only for the Note 3. I would really appreciate the help. Thank you!!!!