It’s no secret that handset manufacturers are looking to foldable phones as the next big evolution in smartphone design, with upcoming devices like the Samsung Galaxy Fold and Huawei Mate X doing a great job of showing consumers what the future has in store for them.

Now, it appears that Apple is getting ready to join the folding phone revolution, with the US Patent Office publishing a patent filing that offers further proof that a folding iPhone is currently in the works, as reported by Patently Apple.

The latest patent application is focused exclusively on an internal heating system for a folding device’s hinge. Apparently, the Cupertino company is trying to prevent cold foldable displays from cracking by bringing warmth into the mix.

“To facilitate bending about the bend axis without damage when the display is cold, a portion of the display that overlaps the bend axis may be selectively heated,” says Apple’s application, which can be read on Justia Patents.

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