Thank you @loomisjohnson The story comes to an END.
i did try Youtube on the phone - same bad result.
Got me thinking why not try the desktop computer?!
BAMMM !! no problem. DAC works with USB from the computer.
So immediate problem is solved - at least i know the DAC works.
And more confirmation that my phone is a piece of crap, but oh well, got what i paid for.

