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In under 18 months, my iPhone's battery life has gone from great to terrible
My daily driver iPhone 15 Pro Max can't last a day anymore. What happened?
Apple says that the battery is designed to retain 80% of its original capacity at 1,000 recharge cycles "under ideal conditions." Adrian Kingsley-Hughes/ZDNETThis iPhone is running a beta version of iOS 26, with Adaptive Power enabled, so in theory it should manage battery consumption better. However, bugs are to be expected in beta software, so I thought that might have something to do with the issue and rolled back to the latest iOS 18 release.
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