What does إشارة تحذير 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 إشارة تحذير?

HTC first drew إشارة تحذير in Sense 7, released 30 مارس 2015.

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

HTC

HTC Corporation has drawn إشارة تحذير 2 times. Every revision HTC has shipped is below, newest first.

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

HTC artwork for this emoji spans 2015 to 2016.