The iPhone Fold Is Real: Liquid Metal Hinge Confirmed, Prototypes Reach Global Carriers

Apple's first foldable iPhone is entering its final validation phase. On June 2, 2026, Chinese supply-chain leaker Fixed Focus Digital reported that prototype units of the device — widely called the iPhone Fold or iPhone Ultra — have been shipped to carriers worldwide for network and compatibility testing . The leaker also confirmed that Apple has selected a Liquidmetal hinge for the device, a material decision that had been in flux as recently as April 2026 .

These are not cosmetic rumors. Carrier testing typically signals a device is nearing mass production, and the hinge confirmation resolves months of supply-chain speculation about whether Apple would use liquid metal or a 3D-printed titanium alloy .

Why the Liquid Metal Hinge Matters

Liquidmetal — also called amorphous alloy or metallic glass — differs from conventional metals because its atoms lack a crystalline structure. That gives it high strength, corrosion resistance, and a natural elasticity that helps it resist wear under repeated stress .

For a foldable phone, where the hinge is the single most failure-prone component, those properties translate into better durability and a smoother folding action. The ultimate goal for Apple appears to be a crease-free display that holds up over years of use, and the hinge material is central to that engineering challenge .

Apple's relationship with Liquidmetal dates back to August 5, 2010, when the company paid a one-time license fee for a perpetual, worldwide, fully paid, exclusive license to commercialize Liquidmetal Technologies' intellectual property in consumer electronics . Since then, the material has shown up only in minor roles — most famously the SIM ejector tool included with iPhones. The foldable hinge represents the first large-scale structural application after more than 15 years .

Key Specifications from Supply-Chain Reports

Most supply-chain sources have converged on a consistent set of expected specifications for the device :

• Design: Book-style foldable, opening like a Galaxy Z Fold to reveal a tablet-sized screen inside
• Inner display: 7.8 inches, crease-free, with a 4:3 aspect ratio and likely 2,713 × 1,920 resolution
• Cover display: 5.5 inches, usable as a standard one-handed phone when folded
• Chip: A20 Pro, built on TSMC's 2nm process, shared with the iPhone 18 Pro and Pro Max
• Modem: Apple's second-generation custom C2 modem
• Authentication: Touch ID integrated into the side button; no Face ID on this model
• Rear cameras: Dual 48MP sensors for wide and ultra-wide lenses
• Front cameras: A punch-hole selfie camera on the cover display plus an under-display camera inside the fold
• Pricing: Widely expected to fall between $2,000 and $2,500, though no major analyst has confirmed a specific figure

Analyst Jeff Pu has reported that the foldable iPhone will share the A20 Pro chip and C2 modem with the iPhone 18 Pro series, along with 12GB of RAM .

Production Delays: Hinge Reliability at the Center

Despite the steady advance of carrier testing, manufacturing has not been smooth. In May 2026, leaker Instant Digital reported that trial production had stalled because the hinge was consistently failing durability tests under prolonged, high-frequency opening and closing . The issue was described as one that "must be resolved with absolute perfection" before progress could continue.

DigiTimes subsequently reported that mass production had slipped by roughly one to two months, from a planned June 2026 start to July or August . Apple has not communicated any launch delay to suppliers, and Bloomberg's Mark Gurman reported in April 2026 that the company still plans to unveil the device in September alongside the iPhone 18 Pro and Pro Max, though initial supply may be constrained for several weeks .

The Liquid Metal Supply Chain

Analyst Ming-Chi Kuo first identified Dongguan EonTec as the exclusive supplier of liquid metal for the foldable iPhone's hinge in March 2025 . The company had already shipped over 10 million axial components (central shafts) by late 2024, signaling its readiness for high-volume production .

EonTec holds a 60% stake in contract manufacturer Dongguan Yihao Metal Technology, which is expected to handle production. Liquidmetal Technologies, the U.S.-based IP holder, maintains cross-licensing agreements with EonTec and a 70%-owned joint venture in Hangzhou, China . The entire supply chain has been structured around Apple's exclusive license and EonTec's manufacturing capacity.

What Remains Uncertain

All information about the foldable iPhone comes from supply-chain sources, analyst notes, and leakers. Apple has not officially announced the device. The September 2026 timeline is widely cited by reputable sources, but the hinge reliability issues and compressed production schedule mean a slip to late 2026 is at least plausible. Pricing is also based on early component-cost estimates rather than announced pricing.

Still, the shipment of prototypes to global carriers is the most concrete sign yet that Apple's foldable iPhone is real, deep in validation, and on a path toward shelves.