What does Keyboard 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 Keyboard?

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

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

Samsung Touchwiz 7.0

Samsung shipped a new design for Keyboard in Touchwiz 7.0, released August 18, 2016. The previous design is shown beside it.

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

What does Keyboard 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 Keyboard?: Samsung first drew Keyboard in Touchwiz 6.0, released March 7, 2016.
How many times has Samsung redrawn Keyboard?: Samsung Electronics has shipped 24 versions of Keyboard. Each is dated, so you can see when the design changed.