The front iPhone camera uses an infrared array of dots for FaceID, not LIDAR. It's basically a miniaturized version of the Kinect from the Xbox (Apple bought the company that created it).
AMS provides Apple with optical sensors for 3D facial recognition features on its newest smartphones
“We see a risk that Apple moves to dual sourcing for the face ID – which currently is single sourced from AMS - in order not to rely on deliveries from just one supplier and also in order to have a favorable pricing power,” said Hauck & Aufhaeuser analysts in a note to clients.
