The iPhone 18 Pro Max reached its Lock Screen in 12.70 seconds, 0.30 seconds ahead of the iPhone 17 Pro Max and 2.70 seconds ahead of the iPhone 16 Pro Max.
Watch our boot speed test comparing the iPhone 17 Pro Max, 16 Pro Max, and 15 Pro Max on iOS 26. The result for which iPhone starts up fastest may surprise you.
Which iPhone 17 boots fastest? Our speed test compares the iPhone 17 Pro Max, Air, and standard models. The results show a clear and surprising winner.