Hi, I can't get the headphone dongle to work. When I plugged it in, nothing happens, and when I plugged headphones in nothing happens and audio keeps playing thru speakers.. I've tried 5 different headphones that I know work. Is there a setting somewhere that needs to be turned on to recognize the dongle or I have a bad one? Anyone else's headphone adapter not working? The usbc port on phone works 100% because I can charge and transfer files..