I just got off FaceTime audio with a friend... It was awful, every sound she made was like nails on a chalkboard. From crumbling plastic to a small cough.. She has noise cancellation on on her iPhone 7.. My volume is at 75%. My phone sounds like the treble is way too high, almost all sound peaks and is unpleasant. My phone also vibrates when about 50%. If I put the sound any lower I can't hear the talkers. Does anyone else experience this?