Apple’s milestone 20th-anniversary iPhone is rumored to adopt its glass manufacturing process from the iPhone Air, the company’s thinnest handset to date at 5.6 mm. Details from leaker Fixed Focus Digital suggest that the equipment used for iPhone Air production is being adapted to produce more curved glass components for the upcoming iPhone 20, helping reduce costs and enhancing both heat dissipation and thinness. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/))
A departure toward an all-glass, curved design
According to reports, prep work is already underway at Apple’s supply chain facilities. A recently completed renovation aligns with expectations that the iPhone 20’s build quality will match or approach that of the first-generation iPhone Air. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/)) One focal point is a redesign of the device with curved glass that wraps around its sides, creating a seamless front-to-back experience with no display cutouts—a marked shift from current flat-edge designs. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/))
Manufacturing advantages and improved thermals
The transition to rounded glass isn’t just aesthetic. The modified iPhone Air glass production tools are expected to yield components that are thinner, while improving heat dissipation—key concerns in high-performance smartphone design. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/)) By retooling existing Air-production infrastructure, Apple may lower production costs, making this design shift more feasible at scale. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/))
What to expect going forward
The iPhone 20 is expected to arrive in Fall 2027, following a lineup that includes the iPhone 18, iPhone 18e, and iPhone Air 2 due in Spring. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/)) Analysts anticipate that these curved-glass devices will set a new visual standard for premium phones in Apple’s line-up—leveraging materials like polished titanium frames and near-full glass wrapping surfaces. ([macrumors.com](https://www.macrumors.com/2026/08/24/iphone-20-curved-glass-to-be-like-iphone-air/))
Upgrading nearly every aspect of the design—from glass profile and edge curvature to thermal efficiency—signals Apple’s intent to redefine what its flagship iPhone looks and feels like, especially as it hits two decades of evolution. The challenge lies in maintaining durability with such curves and managing costs and yield rates in manufacturing. As Spring 2027 approaches, we’ll be watching for real test units to leak, supply chain updates, and whether the curved-glass iPhone 20 lives up to the iPhone Air’s standards—or even surpasses them. Apple’s design ambitions here could reshape expectations across the entire smartphone industry.
