AT&T sent out an update for my Samsung Galaxy 8 + on 12/11 ever since then my WiFi calling keeps dropping and I am dropping calls. Is anybody else experiencing this issue? And if you are what did you do about it. When somebody calls or when I call out all you hear is grumbling and slurring words. On the setting for WiFi calling it says it's on but the tab button is shaded Gray so it is not connected. Help is needed.