UPDATE: I went to the link in the email I received to check it out. And it is not helpful. My internet and data are just fine. My phone is fine. I have had this problem since before I got this phone. About 75% of the time it's hard to hear and the video quality isn't that good. It gets to about 85% good quality when I have a wifi signal. I think this should have the same quality no matter if it's 4G or wifi. If you could fix this I would give 5 🌟