https://wccftech.com/apple-testing-vapor-chamber-cooling-on-2022-iphones/

Vapor chamber cooling solutions are additions Android phone makers have used for quite a while now. Gaming smartphones like the ASUS ROG Phone 3 and others take advantage of this cooling to allow the chipset’s performance cores to run at peak levels without running into thermal limitations. Apple’s iPhones, unfortunately, don’t appear to go ahead with this approach.

Though the company’s A-series of silicon like the A13 Bionic and A14 Bionic impress greatly with their significant performance gains, they too run into thermal constraints. It looks like this could be a thing of the past, at least with the 2022 iPhone series.