Apple Secrets

Apple Secrets

iPhone 17 Pro Max: The New Smartphone Battery King

Apple’s latest flagship sets a new standard for endurance

Apple Secrets's avatar
Apple Secrets
Sep 22, 2025
∙ Paid

The release of a new iPhone lineup always brings intense scrutiny, with users and reviewers eager to see if Apple’s latest flagships live up to their lofty promises. For power users, no metric is more critical than battery life. Early, comprehensive testing has now delivered a verdict: the iPhone 17 Pro Max has not only met but exceeded expectations, firmly establishing itself as the new undisputed champion of smartphone endurance.

In a series of demanding, real-world tests, Apple’s top-tier device outlasted its fiercest competitors, including Samsung’s flagship Galaxy S25 Ultra. The results highlight the significant gains made through Apple’s integrated approach to hardware and software efficiency, solidifying the Pro Max as the definitive choice for users who demand all-day power and then some. This analysis breaks down the test results, explores what they mean for the broader smartphone market, and examines the factors contributing to this impressive performance.

User's avatar

Continue reading this post for free, courtesy of Apple Secrets.

Or purchase a paid subscription.
© 2026 Apple Secrets · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture