This caused massive problems with Face ID, which simply stopped working on these iPhones. Therefore, in the next update to iOS 15.2, the company has fixed this bug. But along with this, the True Tone function “broke” on iPhones, which adjusts the color rendering temperature depending on the ambient lighting conditions.
How to fix the situation is not yet known, Apple did not comment on user complaints in any way. At the same time, the company also did not say whether there were problems with Face ID, a system error or an intentional solution.