vapor

And so there's also a new vapor chamber right in the middle of the back of this phone.

First time we've seen a vapor chamber on the iPhone.

That’s the definition of airlock or vapor lock.

They’re able to do that because the compounds have a high vapor pressure.

Both also certainly sacrifice long-term cooling of this flagship chip by leaving out the vapor chamber from their bigger flagship brothers.

These new Pro phones are thicker than last year, more room inside for bigger batteries, and a vapor chamber, and a bigger camera.

But the extra thickness has also made room for a vapor chamber for the first time, and it's actually made a real difference to the thermals and the behavior of this phone.