This is not the first cell phone I've had with this problem.  When on headphones, the minimum volume is too loud.

There are times when I want VERY light music playing, such as when sleeping, or trying to get work done.

Unfortunately the minimum volume (the lowest value just above "mute") is too loud.  The ONLY work around is to go into the equalizer and set EVERY setting to it's minimum (and still it's a bit too loud).  And I have to keep switching back when I want full volume.  HIGHLY irritating.

Right now it's doing this on my Galaxy S10.  But the point is, this isn't the only phone it does this on.

MY REAL QUESTION:  HOW DO I GET THIS FEEDBACK TO SAMSUNG IN HOPES THAT THEY FIX THIS IN FUTURE PHONES?  

I'm willing to send an old-school paper letter if that's what it takes