Well, yeah, they misused "ct." - which stands for "carat" - which is used for diamonds and precious stones, not gold. That's "karat."
Besides that, though, down in the right corner of the photo, you can just make out the reflection of the smartphone taking the picture.
The problem is that it isn't an HTC smartphone. In fact, the shape, camera placement and what appears to be a logo point toward it being an iPhone. How embarrassing is that?
HTC seems to agree as it quickly pulled that photo and just left the other two that were not obviously taken with a competitor's product.
— HTC (@htc) June 5, 2015
Do you think a 24-karat smartphone is elegant or tacky? Let me know in the comments.