What does زر ترجيع 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 زر ترجيع?

HTC first drew زر ترجيع in Sense 7, released 30 مارس 2015.

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

HTC Sense 7

HTC shipped a new design for زر ترجيع in Sense 7, released 30 مارس 2015. The previous design is shown beside it.

The first HTC release we hold for this emoji.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

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