Apple iPhone Duo hinge shows no significant wear after 32,000 folds
Independent testing of the Apple iPhone Duo revealed the device's hinge remained structurally stiff after 32,000 folds. While Apple lacks official lifetime fold specifications, this third-party assessment suggests high durability. The findings provide early benchmarks for the new foldable, though official longevity claims remain pending from the manufacturer.
Key points
- Joanna Stern, a technology journalist, conducted a stress test on the Apple iPhone Duo, subjecting the device to over 32,000 folds across four nights.
- Using a calibrated push-pull gauge, Stern found the hinge was stiffer after the test than before, despite an initial perception of looseness during the process.
- Apple has not yet published official lifetime fold counts for the iPhone Duo, unlike Samsung, which claims its Galaxy Z Fold7 display passed a 500,000-fold durability test.
- Samsung Display estimates its 500,000-fold rating translates to over ten years of use for individuals folding devices 100 times daily.
- The iPhone Duo test was performed with a protective case on, and the automated machine did not fully close the device after each opening cycle.
- Stern did not determine if the repeated folding increased the visibility of the screen crease, a common degradation issue in other foldable devices.
Apple has not yet released official durability metrics for the iPhone Duo, leaving consumers without a guaranteed lifetime fold count. In the absence of manufacturer data, independent testing has provided the first concrete evidence of the device's mechanical resilience. Joanna Stern, a technology journalist, subjected a review unit to more than 32,000 folds over four nights using a custom-built testing rig.
The results indicated that the hinge maintained its structural integrity. Stern initially suspected the mechanism was becoming looser as the fold count increased, but objective measurements told a different story. A calibrated push-pull gauge, used to take readings before and after the stress test, showed that the hinge was actually stiffer than it was at the start of the experiment. Stern noted that in everyday use, the difference was imperceptible, describing the post-test feel as comparable to the device's initial state.
This performance stands in contrast to competitors who provide explicit longevity claims. Samsung, for instance, announced in 2025 that the display used in the Galaxy Z Fold7 passed a 500,000-fold durability test. Samsung Display asserts this translates to more than ten years of service for users who fold their devices approximately 100 times per day. Until Apple publishes similar data, Stern’s 32,000-fold assessment remains the primary third-party benchmark for the iPhone Duo's hinge durability. Notably, the test was conducted with a case on the device, and the automated machine did not fully close the phone after each cycle, variables that may influence long-term wear.
Sources
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