What does グラフ下向き 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 グラフ下向き?

HTC first drew グラフ下向き in Sense 7, released 2015年3月30日.

HTC Corporation has shipped 2 versions of グラフ下向き. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn グラフ下向き 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.