Apple hasn’t shared testing of the iPhone Duo’s hinges or given a lifetime fold count like Samsung, but Joanna Stern used a custom device to subject her review unit to more than 32,000 folds over four nights. Over the course of the test, Stern said he thought it might feel looser as the number of pleats increased, but his final conclusion was that he couldn’t feel much of a change. A calibrated push-pull gauge used to take readings before and after the Duo fold test showed that the hinge was actually stiffer than before. But in daily use, I couldn’t really feel the difference. So after 32,000 folds, it felt pretty much the same as the first day, which is pretty impressive. Stern did not comment on whether the folding test caused the crease to become more visible, which can happen over time with other foldable devices. Their tests were done with a case on, and although the machine opened the Duo floor, it didn’t close it completely each time. Samsung’s foldable displays undergo official testing, and in 2025, the display used for the Galaxy Z Fold7 passed a 500,000-time durability test. Samsung Display says that translates to more than 10 years for average users who fold their device about 100 times a day, or more than six years for users who fold it more than 200 times a day. Until Apple shares information about the durability of the screen and hinges, Stern’s test is all we have to go on. This is unlikely to be the last unofficial test of endurance we see in the coming weeks. Full details on Stern’s machine, including how it was built, can be found in his YouTube video, and he has more information in his review. Popular Stories Apple retail staff were asked to warn against walk-in iPhone Duo purchases. Some Apple retail employees have been asked to warn customers not to visit to purchase an iPhone Duo without a pre-order on Friday, October 23. Apple Store employees told MacRumors that they have been informed that there will likely be no iPhone Duo stock available for walk-in purchases on launch day. Staff have been instructed to discourage customers without pre-orders from coming… Mark Gurman: Apple made a ‘big mistake’ with iPhone Duo pre-orders Despite knowing that the iPhone Duo would face “severe supply constraints” due to manufacturing challenges, Apple decided to start pre-orders for the iPhone Duo on Friday rather than wait until it had more inventory ready, according to Bloomberg’s Mark Gurman. In his Power On newsletter today, he called this decision a “big mistake.” “Let me get to the point: Apple made a big mistake here,” he said… Here’s what Apple apps look like on the iPhone Duo With just three days left until the launch of the iPhone Duo, Apple is gearing up for the launch. Behind the scenes, the App Store now has screenshots of Apple’s built-in apps running on the Duo. We’ve seen some apps in marketing materials, but the images we haven’t seen give us an idea of what it will be like to use the iPhone Duo on a day-to-day basis. Many applications are displayed in landscape format…
