Reports suggest that Apple's initial foldable iPhone model will incorporate advanced materials, including liquid metal for its hinge and improved titanium alloys for the device's main body.
Material Specifications
A source from a material company, cited by Korean Naver user 'yeux1122,' indicates that the hinge will be constructed from liquid metal, an amorphous material Apple has been exploring for over 15 years. This material is characterized by its high strength, resistance to permanent bending, and durability under repeated mechanical stress. These properties are considered essential for the fatigue resistance and spring-like behavior required in foldable device hinges.
The primary body of the device is expected to utilize a refined titanium material. This new alloy and manufacturing process are intended to enhance strength while simultaneously reducing overall weight, even with a similar surface area to existing titanium iPhone frames. Titanium offers a superior strength-to-weight ratio compared to aluminum or stainless steel, which is particularly relevant for managing the weight of larger foldable designs.
Background and Development
Apple has held a 'perpetual, worldwide, fully-paid, exclusive license' to commercialize Liquidmetal intellectual property in consumer electronics since 2010. While previously used in small components like SIM ejector tools, the material's scalability for high-volume structural components has presented challenges. However, liquid metal has continued to appear in Apple patent filings related to hinges and moving parts.
Apple has prior experience with titanium in its iPhone lineup, providing several generations to refine alloy compositions and optimize properties for device construction.
Expected Release and Features
The debut of Apple's first foldable iPhone is anticipated in the fall of this year, alongside the iPhone 18 Pro and iPhone 18 Pro Max. Rumored specifications for the device include a wide, book-style folding design with a 7.8-inch internal display and a 5.5-inch external display. Additional reported features include a crease-free display, the A20 chip, Apple's C2 modem, two rear cameras, and Touch ID.