The iPhone Duo’s Cooling System Hides a Clever Trick Inside Its Hinge
Apple says the flexible graphite pipe helps dissipate heat from the A20 Pro while preserving hinge durability across many cycles.
- Apple routed a flexible graphite pipe through the Duo hinge to transfer heat between the two halves, increasing the surface area available for heat dissipation.
- The A20 Pro utilizes a 2nm process and unstacks the DRAM module, placing it next to the chip in a WMCM configuration to facilitate quicker data speeds and more effective heat management.
- Banafsheh Barabadi, Apple's senior manager of thermal product design, said the "metal over foam" material creates a direct thermal coupling between the SoC and the vapor chamber, eliminating the thermal bottleneck of previous POP packaging.
- For the Duo, Apple added a second display engine to support simultaneous operation of the inner and outer displays, ensuring smooth performance with increased CPU and GPU capabilities.
- When released on October 23, the Duo promises capabilities similar to the Pro Max, which earned a PCMag Lab Award for record-setting battery longevity.
18 Articles
18 Articles
The iPhone Duo hides secrets in its hinge, an interview with executives reveals these details
The iPhone Duo’s hinge cooling is the breakthrough Android foldables need
Credit: Aamir Siddiqui / Android Authority TL;DR Apple built a flexible graphite pipe into the iPhone Duo hinge to dissipate excess heat between the two chassis halves when folded. Combined with an unstacked A20 Pro SoC and vapor chamber, the active thermal hinge helps maintain peak performance for longer under heavy loads. Android foldables have used graphite sheets as part of the display stack or on the chassis on either side of the spine, bu…
Apple's Hidden Thermal Mastery: How the iPhone Duo Achieves Laptop-Class Power in a Folding Frame
Apple just shipped its first foldable iPhone. The Duo, arriving in stores this week, carries a price tag near $2,000 and a design that bends in half. Yet the real story sits inside. Engineers spent years solving heat in a device thinner than any prior iPhone when open. Their fixes let the A20 Pro chip sustain performance once reserved for MacBooks. The numbers sound familiar at first. Up to 20 percent faster CPU. Forty percent faster GPU. Double…
Where Apple focused engineering so the iPhone Duo could have desktop-like performance
To make the iPhone Duo as thin as it is, Apple needed to make a lot of design choices to fend off heat. Here's what they did, how they did it, and where in the device the innovations live.iPhone DuoFolding devices like the iPhone Duo often raise engineering challenges due to their unique design. However, solving problems like making as thin a smartphone as possible can lead to the creation of others, such as keeping it cool.In an interview with …
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