Users of the iPhone 18 Pro have reported issues with the device freezing when using Face ID, Apple's facial recognition feature. The problem occurs when a protected application, such as a banking or security app, requests biometric authentication. If the first Face ID attempt fails and the user chooses to retry, the screen becomes unresponsive for several seconds before the device restarts and returns to the lock screen. This issue has been successfully reproduced on at least one iPhone 18 Pro sold in Europe, though not all users are affected. The malfunction does not occur when Face ID is used directly from the lock screen, only when triggered by a protected app. Additional Face ID-related anomalies have been reported by early iPhone 18 Pro users. On forums like MacRumors, some users have seen the message "Face ID is not available" when trying to set up facial recognition. Others have noted that the "Require Attention for Face ID" setting, which ensures the user is looking at the screen before unlocking, isn't always respected when enabled. These issues may be linked to changes in Face ID's hardware integration on the iPhone 18 Pro, where the infrared camera is now placed under the screen in the upper left to make room for a smaller Dynamic Island. However, no direct connection has been made between this hardware change and the reported bugs. In a Reddit discussion, one user claimed that Apple support recommended replacing the device after encountering the issue. Tech news site 9to5Mac suggests that the problem may be software-related and could be fixed with an upcoming iOS 27 update. Additionally, a separate bug causing device restarts has been reported on some iPhones running iOS 27, though this issue does not affect the iPhone 18 Pro. Apple is likely investigating these reports to determine the root cause and provide a solution for affected users.