I've had a Galaxy Tab4 for about 2 or 3 years. It works fine. No problems. I'm currently using it to stream music in my office suite. It's on 24/7. It streams fine - EXCEPT - for some reason, at some point during the night, the volume turns itself down. In the morning it's barely audible. Sound settings are set at max, but they change overnight. I'm stumped. It's easy enough to turn the volume back up, but how do I get it to remain at full volume until the end of time?