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Supply chain analyst Ming-Chi Kuo has also acknowledged the overheating issues in the iPhone 15 Pro models that were earlier reported by different users online. As such, the analyst has a new report explaining the reason behind it, claiming it is not the A17 Pro chip to blame but Apple‘s thermal system design compromises in the units.

The issue surfaced as soon as the first batch of the iPhone 15 models was released, and customers started transferring their data from their old units to the new models. As we reported earlier:

One of the first to spot the issue was Chinese content creator Geekerwan, who shared that the iPhone 15 Pro Max could overheat and experience significant thermal throttles during intensive tasks such as gaming.

Others also backed up the claims but noted that such an issue occurs only when setting up the device. Other users, however, pointed out that their units still experienced the same problem when handling other demanding tasks, including 4K recording and playing games in maximum settings.

In a review, the YouTube channel Rjey Tech confirmed the issue, which was spotted while shooting in LOG format and editing the video via iPhone’s video editor. The review noted:

I believe this is due to two factors. First off, titanium captures heat 12x more than aluminum, meaning titanium can get rather hot rather quickly. Next up is the A17 Pro chipset. This chipset found in the iPhone is insanely powerful. In benchmark scores, it can easily keep up with the M2 Macbook Pro. That is some absolutely insane GPU power, but I feel like Apple made a mistake. They focused too much on the GPU and the raw power of the chipset rather than focusing on efficiency. The more efficient a phone is, the more it could handle tasks in the background without overheating. Or it could be that the thermal cooling in this phone isn’t the greatest.

Kuo has voiced the same concern over the new models. And although the analyst claimed that the TSMC’s advanced 3nm node is not to blame for the issue, Kuo noted that Apple made thermal system compromises to make the Pro models lighter. According to the report, the heat dissipation reduction and the use of titanium in the frames led to negative thermal efficiency impacts. Interestingly, Kuo said that it could still be addressed by a software update.

“It’s expected that Apple will address this through software updates, but improvements may be limited unless Apple lowers processor performance,” Kuo wrote. “If Apple does not properly address this issue, it could negatively impact shipments over the product life cycle of the iPhone 15 Pro series.”

It is unknown how Apple will do this, but we will update this story once we get more information about the company’s plans for the issue.


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