What does 閉じた本 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 閉じた本?

HTC first drew 閉じた本 in Sense 7, released 2015年3月30日.

HTC Corporation has shipped 2 versions of 閉じた本. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn 閉じた本 2 times. Every revision HTC has shipped is below, newest first.

What does 閉じた本 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 閉じた本?: HTC first drew 閉じた本 in Sense 7, released 2015年3月30日.
How many times has HTC redrawn 閉じた本?: HTC Corporation has shipped 2 versions of 閉じた本. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.