iPhone Duo withstands more than 32,000 folds in hinge durability tests
Two durability tests subjected the iPhone Duo hinge to thousands of folds. Journalist Joanna Stern used a servomotor machine, dubbed Hingy, that opened and closed the phone 17 times per minute for eight hours each night: 8,160 folds per night and 32,640 over four nights. YouTuber Tim Pan performed 10,000 folds at room temperature and another 1,000 with the phone at about 20 degrees below zero. Both conclude the hinge remains smooth, while the screen crease becomes more pronounced.





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