What does Pause Button look like on Samsung?

On Samsung it is the design shipped in One UI 8.5, shown above at full size. Older revisions are listed beneath it.

When did Samsung add Pause Button?

Samsung first drew Pause Button in Touchwiz 6.0, released March 7, 2016.

Samsung Electronics has shipped 24 versions of Pause Button. Each is dated, so you can see when the design changed.

Samsung Experience 8.5

This is the design Samsung introduced in Experience 8.0, shipped again unchanged. It was not redrawn for this release.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does Pause Button look like on Samsung?: On Samsung it is the design shipped in One UI 8.5, shown above at full size. Older revisions are listed beneath it.
When did Samsung add Pause Button?: Samsung first drew Pause Button in Touchwiz 6.0, released March 7, 2016.
How many times has Samsung redrawn Pause Button?: Samsung Electronics has shipped 24 versions of Pause Button. Each is dated, so you can see when the design changed.