Apple is testing iOS 27.0.1 for iPhone, according to web traffic analytics from 9to5Mac and Mac Rumors. The update will likely focus on bug fixes and performance improvements. Apple confirmed to 9to5Mac it will release a software update early next week to fix a problem causing some iPhone 18 Pro and Pro Max units to restart after a failed Face ID attempt.

The issue occurs when using Face ID to unlock apps like Passwords; if Face ID fails, the iPhone may unexpectedly reboot. The author was unable to reproduce the problem on their iPhone 18 Pro or iPhone 18 Pro Max, but it clearly affected a number of users. The bug can be fixed via software rather than hardware repair.

It is likely, but not confirmed, that iOS 27.0.1 will address this problem and could include fixes for other bugs affecting iOS 27 and the new iPhone 18 Pro hardware.