What does Up-Left Arrow 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 Up-Left Arrow?

HTC first drew Up-Left Arrow in Sense 7, released March 30, 2015.

HTC Corporation has shipped 2 versions of Up-Left Arrow. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn Up-Left Arrow 2 times. Every revision HTC has shipped is below, newest first.

What does Up-Left Arrow 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 Up-Left Arrow?: HTC first drew Up-Left Arrow in Sense 7, released March 30, 2015.
How many times has HTC redrawn Up-Left Arrow?: HTC Corporation has shipped 2 versions of Up-Left Arrow. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.