Are you using the TrueDepth camera kit on your iPhone X?

Above - the TrueDepth camera kit on the iPhone X. Below - the 3D-sensing face unlock setup on the Oppo Find X

Apple's Face ID tech on the iPhone X relies on four components - structured light transmitter and receiver, a front-facing camera, and a time of flight/proximity sensor. These sensors and cameras are all clustered in the "notch" at the top bezel. The structured light ones collect depth information which is combined with images taken with the front-facing camera to produce a 3D map of your face using software algorithms. Apple uses the TrueDepth setup for Animoji and Memoji, ...