An image shared by leaker Majin Bu offers what may be the clearest look yet at Apple’s rumored solution to a growing challenge in high-performance smartphones: heat dissipation. Here’s what it looks like.
According to Bu’s sources, Apple is preparing to bring a vapor chamber to the iPhone 17 Pro lineup, a technology already common in gaming laptops and high-end Android flagships.
Contrary to the graphite sheet cooling technology used in iPhones today, which spreads heat across a surface, a vapor chamber works through phase change: liquid inside the sealed metal plate evaporates when hot, moves to a cooler area, condenses, and then cycles back again.
While this makes for faster and more even heat distribution, it is worth noting that past rumors and leaks accounted for the fact that Apple might use a vapor chamber in addition to its graphite cooling sheet, so this is not an either/or situation.
What does it look like?
Thanks to what Bu says is a pre-production image, we can have an idea of what the component might look like.
The photo shows what appears to be the base plate for the vapor chamber system, with intricate micro-perforated copper patterns typical of VC manufacturing.
Exclusive preview: The new vapor chamber system of the iPhone 17 Pro! Based on an internal source, we analyze how Apple manages the heat of the A19 Pro chip with an innovative design that also involves the camera module.
Full Article: https://t.co/PHG3lu8Nsd pic.twitter.com/RB7yHMYR8J — Majin Bu (@MajinBuOfficial) June 22, 2025
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