The tests were performed after freshly restoring each device to iOS 11.2 using iTunes. The iPhone 8 won the race with an impressive boot speed of 9.583 seconds, an improvement on its iOS 11.1.2 time of 9.833 seconds. It was closely followed by the iPhone 8 Plus at 9.625 seconds and iPhone X 11.167 seconds. Both of those devices also beat their iOS 11.1.2 times of 10.208 seconds and 11.333 seconds, respectively.
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