How does iPhone Air manage heat without a cooling system?

It came a doubt that I have regarding the cooling system on the iphone Air


If the 17 Pro requires a sophisticated cooling system with same CPU and (almost) the same battery as the Air, how will the Air dissipate heat with no cooling system ?



[Re-Titled by Moderator]

Original Title: iphone air heat dissipation

Posted on Sep 11, 2025 2:07 AM

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2 replies

Sep 11, 2025 2:53 AM in response to goncaloportugal

There are many factors that influence both the generation and dissipation of heat.


While the engineering details between the two models of iPhone will differ - and are not published by Apple - consider that the number of available and active CPU/GPU cores are not the same. Clock-speeds may also differ, higher rates invariably creating more heat than lower clock speeds.


Internal physical architecture will also be different, influencing the ability to dissipate heat; the iPhone Air has a larger surface area to distribute heat that is generated, this ultimately determining the rate that heat can be lost to the environment. The iPhone 17 Pro's new vapour chamber technology simply improves the rate that heat can be conducted away from the CPU/GPU to the iPhone Pro's casing, from which the heat can be "lost" to the environment.

Sep 11, 2025 2:30 AM in response to goncaloportugal

According to Apple, while the iPhone 17 Air has the same type of SoC as the iPhone 17 Pro and Pro Max, it has only five GPU cores as opposed to six. The amount of time you get per battery charge is significantly longer on the Pro and Pro Max than on the Air, unless you equip the Air with the iPhone Air MagSafe Battery, which brings the runtime up to the levels you get with the Pro and the Pro Max.


That said, I don't know the answer to your main question.


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How does iPhone Air manage heat without a cooling system?

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