Everything so far points towards Apple releasing the iPhone 17 within the next couple of weeks, with pre orders as early as September 12, following the launch event on September 9. Just ahead of the official reveal, last-minute leaks are surfacing online to give us a better idea of what will be packed into the latest iPhone series.

Four models are expected: the iPhone 17, Pro, Pro Max, and all-new iPhone 17 Air. A recent leak sourced from a Chinese regulator provides us with a close look at the new series’ battery capacities. Focusing on the flagship model, the Pro Max, we can see it has surpassed the 5,000mAh capacity of the Samsung Galaxy S25 Ultra.

iPhone 17 Pro Max has a bigger battery than the Galaxy S25 Ultra, says leak

Thanks to a leak posted by Apple enthusiast ShrimpApplePro on X, we can see the latest numbers for the iPhone 17 series battery capacity. While it looks like the Samsung’s latest Galaxy series is overall more proficient in terms of capacity, Apple has just about taken the top spot with the upcoming Pro Max.

The top model now clocks in with as much as 5,088 mAh; a very slight improvement over the Galaxy S25 Ultra. However, this is for the eSIM-only model. Reportedly, Apple is ready to expand eSIM-only models outside of the U.S. after a few years of exclusivity in the States (since the iPhone 14).

Other regions, such as the UK, have had support for both eSIM and physical SIM tray and others, like China, currently lacks sufficient support for eSIM-only from local carriers, hence warnings of a limited release for the iPhone 17 Air in the region. This is likely because the Air’s slim design doesn’t have space for a physical tray without compromising on the battery size.

About the Author

Jack Goodall

At PC Guide, Jack is mostly responsible for reporting on hardware deals. He also specializes in monitors, TVs, and headsets and can be found putting his findings together in a review or best-of guide.