Apple working on folding iPhone display with more robust bend radius

Apple is continuing to look into the possibility of creating a foldable iPhone, one equipped with a hinge that allows a flexible display to be bent enough for the smartphone to fold, but preventing the display from developing a crease.
The Samsung Galaxy FoldThe Samsung Galaxy Fold
The current trend in smartphones is the addition of a flexible display and movable sections, as evidenced by models from Samsung like the Fold and another rumored device. While producing a smartphone in the first place is a massive feat of engineering in the first place, creating one where the entire unit can fold is a much harder prospect, due to the display.