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Samsung is planning a 400-500$ foldable for 2024
(mashable.com)
This is a most excellent place for technology news and articles.
Every person I've known who has owned a foldable has had it eventually break because of the fold. We try to keep moving mechanical parts out of tech for a reason. I've never had a smartphone 'suddenly break' like a printer or car.
Other than the novelty of it, I don't see the attraction of folding devices. Other than folding it doesn't do anything that my non-folding smartphone doesn't.
Bigger screen with a constrained form factor. If you don't need a bigger screen, you're just not the target, but that doesn't mean it's totally useless.