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iPhone Duo durability test exposes hinge and display vulnerabilities

Heavy dirt exposure prevented the foldable phone from closing fully, while bending it backward caused display failure.

By Mei Ling Tan

Illustration of a foldable smartphone with its hinge and inner screen visible
Photo: Notebookcheck

Apple’s iPhone Duo failed to shut fully after heavy exposure to dirt and suffered display failure during a durability test by Zack Nelson of YouTube channel JerryRigEverything. The tests subjected the foldable phone to sand, soil and bending against its intended folding direction.

Following the dirt test, the phone’s built-in magnets could not pull it completely closed. The exposure was described as unusually intensive, rather than representative of routine use, but revealed a vulnerability involving the hinge.

Apple advertises an IP68 rating for protection against dust and water entering the device. That rating did not prevent the closing problem after the test’s heavy dirt exposure.

The phone did not break apart when bent backward, but its internal AMOLED display failed under the stress. Damage of that kind could be permanent and require US$1,000 repairs. The flexible screen has a nano-texture cover that can make scratches less visible than on competing displays without the matte plastic layer.

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