Apple

Sep 4, 2026AW-0141Right

Mark Gurman: iPhone 18 Pro gets 2nd-gen vapor chamber

Gurman puts second-generation vapor chambers and better battery life in the iPhone 18 Pro and Pro Max, against overheating.

Mark Gurman reported that the iPhone 18 Pro and Pro Max would get better battery life and an improved, second-generation vapor chamber to prevent overheating, along with in-house C2 modems.

How to read this record

  1. What was reportedGurman puts second-generation vapor chambers and better battery life in the iPhone 18 Pro and Pro Max, against overheating.
  2. Who said it, and whenMark Gurman reported it on Sep 4, 2026 in 9to5Mac.
  3. What happened, and wheniPhone 18 Pro was announced on Sep 9, 2026, 5 days after this report.
  4. The verdict, and whyRightIt turned out the way this report said.Why: Apple announced roughly three times the cooling performance and the longest battery life in an iPhone, matching this report's second-generation vapor chamber and better battery life. What the company published
What do these words mean?
Right
It turned out the way this report said.
Partly right
Some of this was right and some of it was not.
Wrong
It did not turn out this way.
Moving target
This was right about the plan at the time. The company then changed it.
Never settled
The company has announced the product and nobody ever confirmed or denied this.
Not comparable
This measured a different thing from the number the company published, so the two cannot be compared.
No outcome yet
Nothing has happened yet that would prove this right or wrong.
Not checked yet
The company has answered this. We have not finished checking this one.
Checked
Checked means the company has since given an answer and we compared it with what was reported. Details still waiting on an answer, details nothing can settle, details where the plan itself changed, and details we have not finished reviewing are all counted separately and are not part of that number.
Moving target
A moving target is a report that described the plan accurately at the time, on a product the company then changed. We count these on their own: it would flatter a reporter to call them right, and it would blame a reporter for a decision that was not theirs to call them wrong.
Reported by
Mark Gurman
We read it in
9to5Mac
Product
iPhone 18 Pro
Read it at 9to5Mac

The story of this report

  1. Sep 4, 2026Mark Gurman reported it · 9to5Mac
  2. Sep 9, 2026iPhone 18 Pro was announced
  3. VerdictRightWhat it means, and why, is in the box above.

Who reported it

Mark Gurman · Journalist

187 reports in the Reporting Record. Of the 57 we have checked, 49 held up. The other 130 are not part of that number: 2 moving target, 20 never settled, 9 not comparable, 99 no outcome yet.

Every report from Mark Gurman

Other claims sourced to the same article

The article above is cited on these roadmap entries too. That is a shared source, not a statement that this report was about them.

  • The main rear camera is expected to get a variable aperture for the first time · Apple iPhone 18 Pro

    Variable aperture is expected on the main camera for the first time.

Questions about this report

Did this iPhone 18 Pro report turn out to be true?
Right. It turned out the way this report said. Apple announced roughly three times the cooling performance and the longest battery life in an iPhone, matching this report's second-generation vapor chamber and better battery life.
Who reported it first?
Mark Gurman reported it on Sep 4, 2026 in 9to5Mac.
How far ahead of the announcement was it?
That was 5 days before iPhone 18 Pro was announced on Sep 9, 2026.