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 layersIn 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…

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