https://www.theregister.co.uk/2019/04/24/ifixit_galaxy_fold_teardown/

You'd think a forensic teardown of the first commercially available foldable smartphone – the Samsung Galaxy Fold – may be less challenging than most, given the device's propensity to do it itself.

But that isn't the case. iFixit's disassembly turns out to be a fascinating account of the mechanical engineering challenges Samsung has overcome, and still faces, in turning a promising lab technology into a durable product. It merits close reading.