When you think of smartphones that dominate the premium space, Apple’s iPhone Pro Max and Samsung’s Galaxy Ultra usually come to mind. In 2025, the iPhone 17 Pro Max and the Galaxy S25 Ultra are two of the most sought-after flagships, and both command a premium price for good reason. They promise the best displays, the most powerful processors, and cameras capable of rivalling professional gear. But a question that many buyers still ask is simple: which one actually lasts longer on a single charge? Battery life can make or break the experience, and for that reason, we ran a controlled 6-hour battery drain test to see how Apple’s latest and greatest stacks up against the king of Android.

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Test conditions

To keep things fair, both devices

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