What does 囲み数字: 1 look like on HTC?

On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.

When did HTC add 囲み数字: 1?

HTC first drew 囲み数字: 1 in Sense 7, released 2015年3月30日.

HTC Corporation has shipped 2 versions of 囲み数字: 1. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn 囲み数字: 1 2 times. Every revision HTC has shipped is below, newest first.

What does 囲み数字: 1 look like on HTC?: On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.
When did HTC add 囲み数字: 1?: HTC first drew 囲み数字: 1 in Sense 7, released 2015年3月30日.
How many times has HTC redrawn 囲み数字: 1?: HTC Corporation has shipped 2 versions of 囲み数字: 1. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.