s9 bluetooth
 

ive been trying to get my s9 to provide stereo sound when on a call. i tried the registry tweak that yall provided, but im guessing maybe i did something wrong though becouse it just doesnt work with mine.

The S9's arent designed to provide stereo sound while in a call. The ad2p profile that is in use while listenging to stereo sounds (MP3's etc) is a different one than the headset profile used while in a call, both run at the same time but can only be used independently. Hope this makes some sense.