According to iFixit, despite the decoupling of the ‌Face ID‌ module and the display, any display replacement disables ‌Face ID‌. This means that screen replacements not authorized by Apple
This reduces the risk of fire if the battery is accidentally damaged during the repair. If your battery is swollen, take appropriate precautions. Note: True Tone and auto brightness functionality are disabled after a screen replacement, even when using an original Apple screen. Face ID is also disabled unless the iPhone runs iOS 15.2 or newer.
Apple's newest release, the iPhone 13, is having a Face ID problem. Apparently, the feature stops working after screen replacement by a third party. The Face ID feature will only return if the original screen is put back on the phone where it belongs. iPhone 13 Face ID Not Working: A Bug or a Repair Problem?
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