Hello.
I am facing a very disturbing problem. I have a brand new Sony Xperia X Performance dual sim and the bluetooth Sony MDR-1000X Headset. Everything was fine until a few days ago.
When I connect the headset, default system mutimedia volume is not applied, and no multimedia command done on the headset is handled by the phone : next/previous track, play/pause volume up/down. Music and sound is still sent to the device properly, I can phone, and even accept calls via tactile headset command.
I found a turnaroud : if the headset is on, and I reboot the phone, the device declares itself connected very early on the phone reboot process (before I enter pin codes). And this is the only way I found to get all remote fonctions to work properly. When I disconnect/reconnect the headset, either by turning off and on bluetooth on the phone or the headset itself, problem appears immediatly. There is no need to say I won't reboot my phone each time I want to listen to music.
I tried a lot of things, even safe mode : no differences.
I tested the same headset on my previous phone, everything works fine.
It is very frustrating to have some quite high-end product basic features not working properly.
Any help will be appreciated, thanks !
