It's possible that your Bluetooth Headphones either are not connected properly or don't allow certain functions especially if they are not Samsung options @Richy951811
Try deleting the pairing and reset them back up.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²⁵ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
