What does Cerchio Bianco 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 Cerchio Bianco?

HTC first drew Cerchio Bianco in Sense 7, released 30 marzo 2015.

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

HTC

HTC Corporation has drawn Cerchio Bianco 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.