iPhone Ultra Supply Chain: Mass Production, Vapor Chamber Cooling, and September 2026 Launch Plans

Mass Production & Foxconn Status

• Mass production is underway. Foxconn's Longhua factory in Shenzhen, which handles iPhone Ultra assembly, has launched large-scale recruitment of temporary workers to ramp up output .
• Apple's 2026 production target has been raised to ~10 million units, up from earlier forecasts of 7–8 million, per Nikkei Asia and supply chain sources .
• The first batch of inventory allocated to the Chinese market is estimated at around 1 million units .
• Earlier hinge-related issues have been resolved, clearing the way for mass production .

Vapor Chamber Cooling Orders

• Supply chain leaker Fixed Focus Digital reported on Weibo that Apple has "significantly increased its total orders for vapor chambers," indicating the cooling technology will be used in the foldable iPhone and upcoming 20th-anniversary models .
• This confirms earlier rumors that the iPhone Ultra will feature a vapor chamber cooling system — a liquid-based thermal solution previously used in the iPhone 17 Pro .

Display Sizes & Design

• Book-style foldable design with a 7.8-inch inner display and a 5.5-inch cover screen .
• The device is rumored to be extremely thin — just 4.5 mm when unfolded .
• Apple has reportedly succeeded in eliminating the visible crease on the inner display .
• Build is expected to use premium titanium .

Chip & C2 Modem

• The iPhone Ultra will ship with Apple's next-gen A20 Pro chip and Apple's C2 in-house cellular modem in some countries, the same silicon expected in the iPhone 18 Pro .
• It is also rumored to feature a Touch ID power button instead of Face ID for biometrics on the foldable form factor .

Pricing

• Starting price is expected to be in the $2,000–$2,500 range, with most reports clustering around ~$2,000 . Macworld estimates $1,999–$2,399 .

Key Uncertainty: The 'iPhone X Problem'

The most significant point of disagreement is initial supply. While supply chain reports say mass production is on schedule and Apple has raised orders to 10 million, Ming-Chi Kuo's latest survey forecasts only 500,000–1 million units shipping in Q3 2026 — far below the 20–22 million expected for the iPhone 18 Pro/Max — and warns of an "iPhone X problem" where demand far outstrips early availability .

Bottom line: Almost every detail is corroborated by multiple current supply chain leaks and reports. The main open question is not if it launches in September, but how many units will actually be available at launch.