Stress-testing the iPhone Duo with a robotic arm
To determine if Apple’s new foldable can survive the rigors of daily use, tech columnist Joanna Stern deployed a custom-built robot nicknamed Hingey. The mechanical arm subjected the device to a relentless cycle of folding and unfolding throughout the night, pushing the hardware to its structural limit in a single session.

The robot operated at a pace of 17 folds per minute for eight consecutive hours, subjecting the iPhone Duo to 32,640 individual cycles. This automated endurance test provides a rare glimpse into the mechanical resilience of Apple’s entry into the foldable market, far exceeding the typical interaction patterns of an average consumer. While the device survived this high-intensity gauntlet, the data underscores the ongoing durability questions surrounding foldable screen technology. For those interested in the mechanical nuances of the test, Stern’s video documentation captures the specific movements of Hingey, while broader analysis of the device’s daily performance and software integration is available in The Verge’s comprehensive review.
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