A new battery life showdown covering 35 popular smartphones has delivered a clear takeaway: Apple’s iPhone 17 lineup sits at the top of the pack in a pair of demanding endurance tests.
In the comparison, phones were put through two different battery trials designed to mimic real usage. The first was a three-hour WiFi video streaming test with the display set to full brightness, a scenario that typically drains even large batteries quickly. The second was a 45-minute mixed “endurance” run that cycled through multiple activities people actually do every day, including gaming, watching video, video calls, and scrolling through social media feeds.
After those back-to-back tests, the iPhone 17 Pro Max finished in first place overall, leading the combined battery life leaderboard. Right behind it, the base iPhone 17 tied for second place alongside the OnePlus 15.
That second-place finish for the standard iPhone 17 is especially eye-catching because its battery is reported to be 49.4% smaller than the OnePlus 15’s. In other words, the iPhone 17 is extracting similar real-world endurance from significantly less capacity, highlighting how much software and system-level efficiency can matter in battery life results—not just the size of the battery on a spec sheet.
The iPhone 17 Pro, meanwhile, didn’t match the Pro Max’s performance and landed in fourth place. It was edged out by the Poco F7 Ultra, which comes equipped with a sizable 5,600mAh battery.
These results matter because battery life continues to dominate buyer priorities. Survey after survey shows that many shoppers place all-day endurance above most other features, sometimes second only to price. Tests like these help explain why: a phone that lasts longer reduces daily charging anxiety and makes a bigger difference in day-to-day satisfaction than many incremental upgrades.
There’s also a broader battery trend lurking beneath the rankings. Silicon-carbon (Si/C) batteries have been gaining attention because they can offer higher capacities, but this test reinforces an important point: bigger capacity alone doesn’t guarantee better battery life. Efficiency, tuning, and optimization can outweigh raw milliamp-hours, and there are ongoing concerns that some Si/C designs may degrade faster over time.
For now, the iPhone 17 results suggest Apple may be making a calculated decision by prioritizing efficiency rather than chasing the largest battery numbers. At the same time, there’s plenty of curiosity about what comes next from other manufacturers—especially as Samsung is reportedly testing a custom silicon-carbon battery with a capacity said to range from 6,000mAh to 8,000mAh. If those efforts can combine large capacity with strong long-term health and excellent optimization, the next round of battery life rankings could get even more competitive.
