What does Keycap: 1 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 Keycap: 1?

Samsung first drew Keycap: 1 in One UI 1.0, released February 19, 2019.

Samsung Electronics has shipped 15 versions of Keycap: 1. Each is dated, so you can see when the design changed.

Samsung One UI 2.0

Samsung shipped a new design for Keycap: 1 in One UI 2.0, released January 30, 2020. The previous design is shown beside it.

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

What does Keycap: 1 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 Keycap: 1?: Samsung first drew Keycap: 1 in One UI 1.0, released February 19, 2019.
How many times has Samsung redrawn Keycap: 1?: Samsung Electronics has shipped 15 versions of Keycap: 1. Each is dated, so you can see when the design changed.