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The batteries in the iPhone 17 series offer longer use before they need to be charged, especially the iPhone 17 Pro Max, which delivers “the best battery life of any phone that CNET has ever tested,” according to managing editor Patrick Holland in his review. That’s partially due to physically larger battery sizes — but that isn’t the whole story.
A new software feature in iOS 26 called Adaptive Power also contributes to improved battery life. It’s enabled by default on Apple’s latest phones, but…
