When I had the Samsung Behold, I connect my S9 (Not HD) through bluetooth. When I did this, all alerts would come through my headset and NOT through the speaker as it normally would do when not connected. But with my G1, it sends all alerts to both the speaker AND the headset. The apps I've looked at that control volume don't seem to fix this issue for me. I'm wondering if there if anyone knows if there is an app I'm not finding that might help me fix the problem or if there is someone out there willing to take a stab at coding it. Were I capable I would try it myself. If someone does decide to take this on, I'm more than willing to test it as needed.