Volume buttons are not working when it comes to media but for ringtone, notification it works. Please tellme how to solve the problem. (In Samsung Galaxy tablet)
If you're not actually listening to something on the media channel, the default button control is for ringtone. If you're on a phone call, it's phone call volume. If you're listening to an alarm it's the alarm volume. So you can only cange media volume when you're actually listening to some media.