What does 白枠四角 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 白枠四角?

HTC first drew 白枠四角 in Sense 7, released 2015年3月30日.

HTC Corporation has shipped 2 versions of 白枠四角. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn 白枠四角 2 times. Every revision HTC has shipped is below, newest first.

What does 白枠四角 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 白枠四角?: HTC first drew 白枠四角 in Sense 7, released 2015年3月30日.
How many times has HTC redrawn 白枠四角?: HTC Corporation has shipped 2 versions of 白枠四角. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.