Joanna stern tested the iphone duos hinge in her sleep – Breaking News & Latest Updates 2026
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Joanna Stern tested the iPhone Duo’s hinge in her sleep.

She used a custom-built robot called “Hingey” to fold the Duo 17 times per minute “for eight hours straight,” for a total of 32,640 folds. You can watch Stern’s review to see how Hingey works, and check out The Verge’s iPhone Duo review for more on Apple’s new foldable.

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