On September 20, 2026, reports surfaced indicating that Apple's newly launched iPhone 18 Pro series smartphones were plagued by the 'Panic Full' issue, characterized by sudden device shutdowns followed by automatic restarts. Based on user reports, repeated failures in Face ID authentication within apps requiring this feature could prompt the device to restart automatically. Users can verify the occurrence of such incidents by checking for log records prefixed with 'panic-full' under 'Settings - Privacy & Security - Analytics & Improvements - Analytics Data'. In international markets, users on the US Reddit platform have also reported analogous problems, with some experiencing up to three restarts while using Face ID within less than a day of acquiring an iPhone 18 Pro Max. It is pertinent to mention that this is not the inaugural instance of such issues cropping up with a new iPhone model; the iPhone 16 series, launched in 2024, encountered similar glitches, which were subsequently rectified through the iOS 18.1 update. Presently, Apple has commenced an investigation to tackle the issues afflicting the iPhone 18 Pro series.