Just in the past few days, my S6 has been aggravating the snot out of me. I turn on BT and connect to a BT speaker (ue megaboom). I play music and everything is fine for 45 mins or an hour or so, then the S6 BT turns itself off. Once that happens, I can't get BT to turn on. Even restarting doesn't help. Then the next day it works again, but the the problem reoccurs. Arrgh!