Hi again,
TO ALL OF YOU. Because I write above that unchecking mic in wire-set settings solve the problem. NOT. And this is even more strange now for Me.
It was good a long time, I mean relatively to that what was earlier. And then, it occurs. Don't know why, just like that.
OK first I just wipe data, make new system (I use custom ones, Nameless, Slim, Cyanogenmod 12.1, 11, etc) and yep this fix it.
Then it occurs. The same as above, but then it doesn't fix it. NO WAY. Ok so I decide to write stock, original firmware from Samsung via Odin, then flash clockwork recovery, and from clockwork flash one of the custom roms (Nameless is the best). And yep, fixed. I think, well it;s not good to do this all the time, but at least it work's after. UNTIL yesterday. It get wrong again. Even flashing 2-3 times original software then any of the above custom DON'T fix it. No way. I was speechless. WHAT IS GOING ON WITH THIS PHONE FOR GODS SAKE! But I calm down, go back to this thread, and read one more time post from robinson-victor, mainly:
"1. Enable it
Update the below
2. Call volume to EAR PIECE
3. Media to SPEAKER"
And think it off, because something is off here, when You change in sound about "media to speaker" You have music from phone speaker, and not in headphones. But I think that just victor think about headphones and mistakenly write speaker.
On My other headphones which are Philiphs MusicSeal this problem don't occur at ALL!! This is strange because they have a controller and mic inside. As the little one's which are Smokin Buds 2. Bud Smokin Buds 2, 1 sec after plug make those crazy volume decreasing. Ok I just have them (Smokin Buds) plugged, and change (as victor mention) only PHONE CALL AUDIO to EARPIECE. And craziness STOPS (without any new wiping, flashing, resetting) just stops, and work's like a charm. Maybe this is the REAL solution. We will see, please try, and share Your results. Horrible thing to a person who can't go running without music. Eh
Cheers to all
P.S Tested a bit further, it work's, but You must activate, deactivate the option which I mention, few times, then the crazy thing stops.