At this point we have practical real world foldable devices. Maybe it is different for other people but I very rarely encounter them in the real world. I cannot help but feel that the feature is essentially a gimmick:
The fold out screen is a secondary function. The device is invariably expected to be fully usable in folded state. This means that everything has to be usable without this secondary functionality.
The fold out screen feature is always going to be more expensive, complex, and more prone to failure than a candy bar device with a single screen
The result is going to be that this will be a luxury or novelty feature without a compelling use case that absolutely requires it, perhaps similar to convertible touch screen laptops that can be used as an etsatz tablet.
At this point we have practical real world foldable devices. Maybe it is different for other people but I very rarely encounter them in the real world. I cannot help but feel that the feature is essentially a gimmick:
The result is going to be that this will be a luxury or novelty feature without a compelling use case that absolutely requires it, perhaps similar to convertible touch screen laptops that can be used as an etsatz tablet.