Why your iPhone Duo will inevitably develop a screen crease

The iPhone Duo developing a crease over time is inevitable as the tides, and a matter of physics and engineering. Here's how and why that crease develops, and what Apple has done to mitigate it. iPhone Duo glass layers In the run-up to Apple's folding iPhone, there was a lot of chatter about how Apple has "solved the smartphone crease." It's always been a silly topic, as there is no solving it, there is only postponing it.