Chosen Solution
I heard that if you replace the screen on the iPhone 13 that Face ID won’t work anymore, is it true?
Yes at the moment this is true. Even if you transfer the components across from the screens it will still not work. The front camera will not work properly either. Hopefully apple might fix this in the next software update.
The only way to get Face ID back after a screen replacement on the 13 is to transfer one of the ICs on the back of the screen by micro-soldering. Edit: Apple is no longer disabling Face ID after screen replacement Sony he iPhone 13 series
