Apple’s forthcoming foldable device, widely referred to as the iPhone Ultra, is currently undergoing prototype testing with global carriers, according to reports from June 2026. The device is expected to feature a liquid metal hinge and a vapor chamber cooling system to manage thermal performance, aiming to address durability and heat concerns in a thin, foldable form factor.
How Apple plans to manage heat in the iPhone Ultra
Apple is reportedly integrating a vapor chamber cooling system into the iPhone Ultra to maintain thermal efficiency. According to reports surfacing in June 2026, this technology—already utilized in the iPhone 17 Pro series—is being adapted for the foldable’s larger display and expected multitasking demands. By incorporating a vapor chamber, Apple intends to keep internal temperatures stable despite the device’s thin profile, which is projected to measure between 4.5mm and 5mm when unfolded.
Why the liquid metal hinge is a strategic choice
The decision to use a liquid metal hinge is designed to solve durability issues common in foldable hardware. As noted by the leaker Fixed Focus Digital on June 2, 2026, the material offers a higher strength-to-weight ratio and superior wear resistance compared to conventional metal alloys.
While earlier supply chain reports suggested manufacturing difficulties related to hinge failures during high-frequency testing, recent updates indicate that development is moving forward rapidly. Liquid metal’s amorphous atomic structure provides the flexibility needed for a hinge expected to fold and unfold hundreds of thousands of times throughout its lifespan.
What to expect regarding design and specifications
Current reports suggest the iPhone Ultra will be a major hardware release, potentially launching alongside the iPhone 18 Pro lineup in September 2026.
- Display: An inner screen measuring between 7.8 and 8 inches, paired with a smaller outer display.
- Performance: The device is expected to be powered by Apple’s A20-series chip.
- Physical build: The folded thickness is estimated at 9mm to 9.5mm.
- Pricing: Early rumors indicate a starting price of approximately $2,000.
Did you know? Apple has a long history with liquid metal, having used the material for over 15 years in specific components, such as the SIM ejector tool included with various iPhone models.
Frequently Asked Questions
Is the iPhone Ultra’s hinge design finalized?
According to reports from June 2026, the liquid metal hinge is a confirmed element of the design, and prototype units have already been shipped to carriers for testing.
How does the iPhone Ultra compare to other foldables?
While the device is still in development, reports highlight Apple’s focus on integrating a vapor chamber and a liquid metal hinge to avoid the common compromises, such as display creasing and thermal throttling, seen in some rival products.
When will the iPhone Ultra be released?
Current rumors point to a potential launch in September 2026, coinciding with the release of the iPhone 18 Pro series.
Are you excited about the prospect of a foldable iPhone? Share your thoughts on how this hardware could change your daily workflow in the comments below.
