And here's that beautiful spine in motion!

At the top: the single rounded sliding hinge.

Just below that: one of the springy clasps, for latching the phone open.

And towards the bottom: the gear array, stabilizing the center and distributing force.

Samsung says they folded these phones more than 200,000 times, and with this hinge system we don't doubt it. But we think it's safe to say that humans aren't quite as gentle as Samsung's robots are? Plus, even a different robot couldn't achieve the same results.