Apple is not ready to make the jump to foldable designs for the time being, but luxury modification company Caviar from Russia might be able to inspire the Californian giant with its impressive iPhone Z concept. The Z-shaped folding pattern allows for quite a few interesting uses, including a laptop mode, a selfie mode, and a screen mode.
https://www.notebookcheck.net/Impressive-iPhone-Z-foldable-concept-estimated-to-cost-US-3-260.418216.0.html