iPhone 18 Pro Max leak: bigger battery, thicker design

A new leak says Apple’s iPhone 18 Pro Max could be getting a bigger battery, with reported capacities of about 5,567mAh for the U.S. eSIM version and 5,391mAh for the international model with a physical SIM tray.

If that holds up, battery life should beat the iPhone 17 Pro Max figures that have been rumored so far, roughly 5,088mAh and 4,823mAh. The tradeoff, at least based on those same rumors, is a thicker and slightly heavier phone: around 9mm instead of 8.75mm, and close to 240g, about 7g more.

And the larger body may not be about the battery alone. Some reports also point to chunkier camera hardware, along with rumors of a variable-aperture main camera on both Pro models, a smaller Dynamic Island, and Dark Cherry color options.

If battery life, gaming, video capture, and a phone that lasts all day matter more to you than having the thinnest possible design, this one looks like it could be worth waiting for. That’s especially true if Apple’s rumored 2nm A20 Pro ends up bringing efficiency gains on top of the larger cell.

There are still a few open questions, though: regional differences, how repairable the phone will be, how comfortable a heavier device is for accessibility, and the environmental cost.

You can’t buy it yet, and for now, this is still just leak territory around Apple’s next Pro Max.

Author: Chema Carvajal Sarabia

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