I'm having a problem with voice calls on my new Galaxy Note 4. It doesn't happen every time, but often when I've been talking for a few seconds the other person will suddenly be unable to hear me, even though I can still hear them. It's almost as if my phone has gone into mute. I'll hang up and call them right back (without changing any settings), and usually the connection is then fine. Anyone else experience this problem? I never had this problem with my Galaxy S3, so I'm puzzled.