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iOS 27 beta 4 mentions new iPhone model with multi-battery feature

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Why This Matters

The discovery of a multi-battery feature in the upcoming iPhone Ultra signifies a major innovation in smartphone design, potentially offering longer battery life and enhanced performance. This development could influence future device architectures and set new industry standards for battery technology, impacting both consumers and manufacturers.

Key Takeaways

iOS 27 beta 4 arrived today, and per Macworld it includes code references to what’s likely a new iPhone Ultra feature: dual batteries.

Macworld found code references in iOS 27 beta 4 to iPhone with multiple batteries

Earlier this month, Weibo leaker Digital Chat Station revealed that Apple’s forthcoming iPhone Ultra is likely to include not one, but two separate internal batteries.

This isn’t uncommon for foldable smartphones, but it would be a first for the iPhone.

And today, following the release of iOS 27 beta 4, we have strong evidence corroborating the leaker’s claim.

Filipe Espósito reports at Macworld that the new beta includes code strings referencing a multi-battery iPhone model. He writes:

The new code strings explicitly state that they are intended for a multi-battery iPhone, alongside the existing references to single-battery iPhones (emphasis ours): “The batteries in this iPhone are performing as expected,” reads one of the strings. Another mentions that “the health of the batteries in this iPhone has significantly degraded.”

We’ve seen plenty of other iOS 27 code references to the iPhone Ultra in the past. There have been code leaks revealing that a foldable iPhone is coming, and one with multiple displays.

Now, add to those today’s new code that mentions an iPhone with multiple batteries.

Per a regulatory filing, the two batteries will have capacities of 1,921mAh and 2,962mAh respectively, for a total of 4,883mAh.

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