I changed my ear speaker flex cable on my XS. I didn’t change my screen as it is still in new condition. The ear speaker cable was causing the “boot loop” mode, specifically the Illuminator sensor. New cable allowed the phone to power on however no True Tone or auto brightness now. Face ID obviously doesn’t work but that is already known. So copying the screen code won’t work because this is the screen that came from my phone originally. Seems like the new cable isn’t paired with the ambient light sensor either.