What does Vibration Mode 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 Vibration Mode?

HTC first drew Vibration Mode in Sense 7, released March 30, 2015.

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

HTC

HTC Corporation has drawn Vibration Mode 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.