Users are increasingly reporting that Apple's new iPhone 18 Pro series experienced so-called "PanicFull," a sudden reboot caused by serious system errors, immediately after its release. While some users in Korea were informed about exchange or refund procedures, Apple Korea did not respond to this publication's inquiry regarding the cause and response plan.
On the 20th, numerous posts appeared on domestic and international online communities, primarily from iPhone 18 Pro and Pro Max purchasers, describing their experiences with PanicFull. "PanicFull" refers to the 'panic-full' analysis log generated when an iPhone reboots due to a critical system error.
In the domestic iPhone user community "Asamo," one user stated that their iPhone 18 Pro suddenly shut down during initial setup before updating the OS (operating system), and they confirmed PanicFull even after the update.
IT YouTuber "Juyeon ZUYONI" also reported observing the same phenomenon on their iPhone 18 Pro. After posting a one-day usage review, Juyeon received multiple reports and confirmed that PanicFull occurred on their device as well. They explained that the device rebooted repeatedly when Face ID authentication failed consecutively in situations requiring it, such as with photo albums or financial apps.
Cases involving visits to service centers have also emerged. One user reported being told at a Freebee store that there was a hardware issue but was subsequently advised that since similar symptoms appeared across multiple devices, it might not be a defect inherent to the device itself. Another user requested a refund after being informed by an Apple Store that the problem was software-related, while yet another user was offered a product exchange at a service center.
Similar claims have also surfaced overseas. A user of the iPhone 18 Pro Max on the U.S. online community Reddit stated their device rebooted multiple times during Face ID and Apple Wallet usage within less than 24 hours of using the product. Another user claimed they restored the software but still encountered the same error approximately five times.
Based solely on the cases reported so far, it is difficult to determine whether the iPhone 18 Pro suffers from a hardware defect or a software issue. Reports from service centers also vary, with some citing hardware malfunctions and others pointing to software errors. This publication inquired with Apple Korea regarding the cause of the PanicFull phenomenon, whether they were aware of it, and their improvement plans, but received no separate response.
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