According to a recent render video published by Front Page Tech, Apple’s first foldable iPhone — often referred to as the iPhone Ultra — may feature an extremely thin design paired with a surprisingly large battery.
The video shows a detailed 3D concept of the device, suggesting a 5800mAh battery and an unfolded thickness of just 4.5mm. These details have since been widely reported by tech media, although they remain unconfirmed by Apple or official supply chain sources.
iPhone Ultra Foldable Leak: Key Design and Hardware Details
1. A Massive 5800mAh Battery for a Foldable iPhone
One of the most surprising claims from the render leak is the 5800mAh battery capacity.
If accurate, this would make the iPhone Ultra:
- The largest battery ever used in an iPhone
- A significant jump compared to current Pro Max models
- More suitable for multitasking and large-screen usage
A foldable device naturally requires more power due to:
- A larger internal display
- Higher refresh rate demands
- Split-screen multitasking features
This is likely why Apple would need to significantly increase battery capacity in a foldable form factor.
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2. Ultra-Thin Design: Just 4.5mm When Unfolded
Another major highlight is the reported thickness of just 4.5mm when unfolded.
For context, this would make it:
- One of the thinnest Apple devices ever designed
- Thinner than most current flagship smartphones by a large margin
When folded, the device is expected to measure around 9–9.5mm, which is in line with existing foldable smartphones.
To achieve this level of thinness, Apple would likely need:
- A redesigned internal stacking system
- A new hinge mechanism
- Highly optimized component layout
3. Book-Style Foldable Design
The renders suggest a book-style foldable design, similar to devices like the Samsung Galaxy Z Fold.
However, Apple’s approach appears slightly different:
- A wider and shorter internal display
- More iPad-like aspect ratio
- Better optimization for reading and productivity
Expected display sizes include:
- ~7.8-inch inner display
- ~5.5-inch outer display
This suggests Apple is positioning the device not just as a phone, but as a hybrid between an iPhone and a small iPad.
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4. Camera and Biometric Changes
In terms of imaging, the iPhone Ultra is expected to feature a dual 48MP camera system, including a main sensor and an ultra-wide lens. The rear camera module is also rumored to follow a design language similar to the iPhone Air.
On the display side, the outer screen is expected to use a standard front-facing camera, while the inner display is reportedly testing an under-display camera solution for a cleaner full-screen experience.
Release Timeline
The iPhone Ultra foldable is currently expected to enter production testing in 2026, with a potential launch window aligned with Apple’s next-generation flagship lineup. Some reports suggest it could debut alongside the iPhone 18 Pro Max, marking Apple’s first entry into the foldable smartphone market.
For a more detailed breakdown of the expected release timeline and launch strategy, you can refer to this analysis:
iPhone Fold Release Date Update: Apple May Launch It With iPhone 18 Pro Max in 2026
Pricing and Positioning
Given its rumored specifications and complexity, the iPhone Ultra foldable would likely sit at the very top of Apple’s product lineup.
Expected pricing:
- Around $2,000 or higher
This aligns with Apple’s strategy of positioning foldable devices as premium, niche products rather than mainstream releases at launch.
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Conclusion
The iPhone Ultra foldable leak paints a picture of one of Apple’s most ambitious hardware projects to date.
If the reported 5800mAh battery and 4.5mm ultra-thin design are accurate, Apple could redefine what a foldable smartphone looks and feels like.
However, until more reliable confirmations appear, this remains an early-stage concept based primarily on render interpretations rather than finalized engineering decisions.
