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iPhone Duo battery life results are in — here's how it compares to other foldables (and iPhone 18 Pro Max)

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iPhone Duo battery life results are in — here's how it compares to other foldables (and iPhone 18 Pro Max)

The best foldable phones come with some compromises, and the iPhone Duo is no exception to that. You only have two main cameras, the screen is shorter than you'd find on other iPhones and the battery is noticeably smaller than the one in the iPhone 18 Pro Max — just to name a few.

But when it comes to battery, size only matters so much. There are a bunch of different factors that impact how long a device can last on a single charge, which is why testing is so important.

We have done our testing with the iPhone Duo, using a custom battery life test designed to mimic ordinary daily use. And the results are fairly impressive, even if they aren't as impressive as they were on iPhone 18 Pro Max.

We tested the battery life of the iPhone Duo, iPhone 18 Pro Max and Samsung Galaxy Z Fold 8 simultaneously, with all three phones situated side-by-side. The results of this test found that the iPhone Duo lasted 13 hours and 20 minutes, and unsurprisingly the iPhone 18 Pro Max lasted 17 hours and 31 minutes. The difference isn't that surprising, since the 18 Pro Max has an extra 684 mAh of battery capacity.

How the Duo compares to the Z Fold 8 is rather interesting, considering the difference in battery size is a mere 83 mAh. According to this test the Duo lasted more than three hours longer than the Z Fold 8, which just goes to show how much of a difference energy efficiency and reduced power consumption can make.


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