What does Botão Avançar 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 Botão Avançar?

HTC first drew Botão Avançar in Sense 7, released 30 de março de 2015.

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

HTC

HTC Corporation has drawn Botão Avançar 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.