Apple has not released official fold durability data for the iPhone Duo, but tech journalist Joanna Stern conducted an unofficial stress test. Using a custom device, she subjected her review unit to over 32,000 folds across four nights. Initially, Stern noticed the hinge might feel looser, but her final conclusion was that she could not feel a significant difference in everyday use.
Notably, a calibrated push-pull gauge revealed the hinge was actually stiffer after the test. While the device felt largely unchanged after 32,000 folds, Stern did not test the crease visibility. Samsung's Galaxy Z Fold7 recently passed 500,000 official folds, which the company claims equates to over 10 years of average use.
Until Apple publishes official figures, Stern's test serves as the primary unofficial benchmark for the iPhone Duo's hinge longevity.
Source: MacRumors · Summarized by HeadlinesBriefing