WSJ's Joanna Stern built a folding robot that fold-tested iPhone Duo 32,000 times overnight

SumitGup · x · 2026-10-22

WSJ's Joanna Stern built a custom robot to open and close the folding iPhone Duo non-stop, running 8 hours a night and completing over 32,000 folds to stress-test the hinge for her review. Trung Phan shared it as a standout example of review commitment.

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