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Nearly 500 smartphone brands have left the market since 2017
(www.techspot.com)
This is a most excellent place for technology news and articles.
I had a phone that took 3D pictures with a true stereoscopic camera and had a 3D display all the way back in 2011, an LG Optimus 3D. It was really neat, but 100% a gimmick because you could only share them with other people who also had the same phone or a 3D TV/monitor, and photos took up 2x as much space. You could still obviously share/view them in 2D, but it kind of defeated the point.
The one really neat feature was that it could "convert" games into 3D, which worked pretty well and was a pretty cool effect overall.
That was back when 3d TV's were still a thing, though, so not crazy
I hate that LG left the market. A LOT of innovation came from them, including a lot of quircky (and often cool) features. They experimented a lot which didn't always work out, but often it did work out great and it made their phones a lot more exciting then most other brands. Because of this a lot of features that are now the industry standard, like having a wide-angled camera lens, were popularized by LG. And yet, somehow, most people don't know this and always saw it as a lesser brand.