Apple Details iPhone Duo Thermal Management System
Apple has revealed technical details about the iPhone Duo's cooling system, including a flexible graphite pipe hinge design.
Apple has disclosed technical specifications regarding the thermal management system of the iPhone Duo, highlighting a new hinge design that incorporates a flexible graphite pipe.
According to 9to5mac.com, this flexible graphite pipe is designed to transfer heat efficiently between the two halves of the device. Additionally, the company is using a "metal over foam" material to establish a thermal coupling between the A20 Pro SoC and the device's vapor chamber.
The iPhone Duo is powered by a variant of the A20 Pro chip, which features a second display engine specifically engineered to support the simultaneous operation of both the inner and outer screens.
The A20 Pro chip first debuted in the iPhone 18 Pro and iPhone 18 Pro Max. This chip utilizes 2 nm process technology, which originally appeared in the M6 chip found in the Mac mini in August 2026.
Quick answers
How does the iPhone Duo manage heat between its two halves?
It uses a flexible graphite pipe within the hinge to transfer heat between the two halves of the device.
What chip does the iPhone Duo use?
It uses a variant of the A20 Pro chip, which includes a second display engine to support simultaneous operation of the inner and outer screens.