Apple’s forthcoming iPhone 18 Pro Max is set to maintain the same 8.75mm thickness as its predecessor, according to recent information from leaker Ice Universe. ([macrumors.com](https://www.macrumors.com/2026/06/04/iphone-18-pro-max-device-thickness-revealed/?utm_source=openai)) This design choice aligns with Apple’s strategic focus on the anticipated foldable iPhone Ultra, as reported by T3. ([t3.com](https://www.t3.com/tech/iphones/the-foldable-iphone-could-actually-be-the-most-fixable-iphone-ultra-details-leaked?utm_source=openai))
**Design and Dimensions**
The iPhone 18 Pro Max is expected to feature a 6.9-inch display, offering an expansive viewing experience. Despite the larger screen size, the device’s thickness remains consistent with the previous model, suggesting that Apple has optimized internal components to accommodate the larger display without increasing the device’s overall thickness. ([macrumors.com](https://www.macrumors.com/2026/06/04/iphone-18-pro-max-device-thickness-revealed/?utm_source=openai))
**Battery Capacity and Performance**
In addition to the larger display, the iPhone 18 Pro Max is anticipated to come equipped with a larger battery capacity. This enhancement aims to provide extended battery life, addressing user demands for longer usage periods between charges. The combination of a larger screen and improved battery is expected to deliver a more robust performance, catering to users who prioritize both display size and longevity. ([macrumors.com](https://www.macrumors.com/2026/06/04/iphone-18-pro-max-device-thickness-revealed/?utm_source=openai))
**Foldable iPhone Ultra**
Apple’s focus on the foldable iPhone Ultra is evident, as the company is reportedly dedicating significant development resources to this innovative device. The iPhone Ultra is expected to feature a foldable design, with a 5.3-inch compact mode expanding to a 7.8-inch unfolded display. This design allows for a compact form factor when closed, while providing a larger screen area when opened. The device is also anticipated to be just 4.5mm thick when open and up to 9.5mm when folded, with a nearly seamless crease angle under 2.5 degrees. ([t3.com](https://www.t3.com/tech/iphones/the-foldable-iphone-could-actually-be-the-most-fixable-iphone-ultra-details-leaked?utm_source=openai))
**Release Timeline**
The iPhone 18 Pro Max, along with the iPhone 18 Pro and the foldable iPhone Ultra, is expected to be unveiled in September 2026. This launch strategy reflects Apple’s approach to introducing its high-end models first, followed by the more affordable iPhone 18 and iPhone 18e models in spring 2027. ([macrumors.com](https://www.macrumors.com/roundup/iphone-18/?utm_source=openai))
**Conclusion**
Apple’s decision to maintain the iPhone 18 Pro Max’s thickness at 8.75mm, despite the larger display and enhanced battery capacity, underscores the company’s commitment to delivering a sleek and comfortable user experience. This design choice, coupled with the anticipated advancements in the foldable iPhone Ultra, highlights Apple’s dedication to innovation and user-centric design in its upcoming product lineup.
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