In article ,
Jeff Liebermann wrote:

On Mon, 20 Mar 2017 23:40:15 -0700 (PDT), wrote:

https://goo.gl/kDK0d3
There's a group of 'schematics'

Try one of these pin diagrams instead:
https://www.google.com/search?q=samsung+headset+connector+wiring&tbm=isch
This looks right:
http://i4.photobucket.com/albums/y136/invinciblegod/TRRSConnector3-1.png
It's a TRRS (Tip-Ring1-Ring2-Sleeve) connector.

Serious work fir 2 channels but mono's OK ...not sure if S5 delivers mono.

Nope. It's stereo on the Tip (right channel) and Ring1 (left
channel).

When I read that, my memory started yelling RED! RIGHT! RING!.

So I checked: https://en.wikipedia.org/wiki/Phone_connector_(audio)

Isaac