Apple's iPhone 18 Pro Max appeared in a fresh leak that reveals details on the physical build of the firm's upcoming flagship device. The newest details indicate Apple may avoid major alterations to one element of the phone's structure, even as prior reports hinted at a redesign. The information also emerges as rumors grow about the company's initial foldable iPhone, set to launch with the iPhone 18 lineup. Apple is broadly anticipated to unveil the new devices in Q3 2026.

Per a Weibo post from tipster Ice Universe (translated from Chinese), the iPhone 18 Pro Max measures 8.75mm in thickness. If correct, the device would keep the same dimensions as the iPhone 17 Pro Max instead of growing thicker. This latest report contrasts with an earlier forecast from the same source, who indicated in March that the next flagship could measure 8.8mm thick.

Apple testing improved cameras for iPhone 18 Pro models

The tipster adds that Apple has directed much effort toward the rumored iPhone Ultra this year. The name often ties to reports on the firm's first foldable iPhone, expected as a fresh entry in the iPhone range.

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Earlier leaks have also pointed to shifts in the iPhone 18 Pro Max weight. Last year, another source indicated the phone might exceed 240g, which could make it the heaviest iPhone from Apple since the iPhone 14 Pro Max. The device might still increase in weight from internal hardware updates, even while holding the same thickness.

Prior reports noted that the iPhone 18 Pro Max may include a larger battery than the existing model. The battery size is expected to fall between 5,100mAh and 5,200mAh, versus the 5,088mAh cell in the eSIM edition of the iPhone 17 Pro Max.

If Apple uses a larger battery while preserving the same thickness, the firm could manage this via internal layout adjustments or by shrinking other parts. Current details show the phone will retain a 6.9-inch display.

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The iPhone 18 Pro and iPhone 18 Pro Max are also set to gain other enhancements. Expected features include a smaller Dynamic Island, Apple's next-generation C2 modem, an updated Camera Control button, and an improved main camera with variable aperture. Apple may release the iPhone 18 Pro models in September, along with the company's first foldable iPhone.