iOS 26 vs iOS 18 BATTERY Test on iPhone 16, 15, 14, 13, 12, 11

In this thorough test, we compare the battery performance of iOS 26 to iOS 18 on every supported standard tier iPhone generation.

The iOS 26 test was conducted on iOS 26.0 (23A341), and the iOS 18 test was conducted on iOS 18.6.2 (22G100).

Corrections:
- The final screen on time I overlayed for the iPhone 16 on iOS 18 was 10 minutes off - it's actually 15:16. My apologies!
- The iPhone 14 actually lasted slightly longer on iOS 26 than iOS 18.

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