Foldable iPhone Said to Feature Vapor Chamber Cooling

New supply chain reports suggest that Apple is planning to use advanced vapor chamber cooling technology for its upcoming ‘iPhone Ultra’ foldable device, which is expected to debut as early as this year (via MacRumors).

Foldable phones are notoriously difficult to keep cool. Because they consist of two halves connected by a hinge, internal space is at a premium. By using a vapor chamber, Apple can spread heat across a larger surface area more efficiently than traditional methods allow.

A vapor chamber is essentially a flat, vacuum-sealed metal box containing a small amount of liquid. When the processor gets hot, the liquid turns into vapor, travels to cooler areas of the chamber, and condenses back into liquid. This cycle moves heat away from the sensitive internal chips much faster than solid materials can.

The timeline for a foldable iPhone has shifted several times, but 2026 is increasingly appearing as the target date. Analysts suggest Apple is working on a top-down folding design, similar to the Samsung Galaxy Z Flip series. To make this device a success, Apple needs to ensure it does not suffer from the durability or thermal issues that plagued early competitors.

Integrating a vapor chamber is a Pro move that signals Apple wants this device to be a powerhouse. Whether you are gaming or editing video on the go, the goal is to provide a seamless experience that does not result in a hot device in your hand.

Currently, Apple uses graphite sheets in the iPhone 15 and iPhone 16 lineups. While these are thin and light, they have limits. As Apple pushes further into AI with Apple Intelligence and high-end gaming with ray tracing, the thermal demands on the hardware are skyrocketing. The foldable form factor exacerbates this because the battery and motherboard are often split or cramped.

By moving to a vapor chamber, Apple is following a trend seen in high-end Android phones, such as the Samsung Galaxy S26 Ultra.