I am using a jaybird x2 with my 7 plus and sometimes I would hear music coming out of the speakers even when it shows that the earphones are connected in the top bar when using GPM.I also go into the Bluetooth settings and it also shows connected. I have to then manually disconnect and reconnect and it works again. It doesn't happen very often but I specifically use earphones because these are in locations where I can't play music through the speakers, so as to not disturb other people.