Some non-screen area at the top of the phone is necessary for the proximity sensor, front facing camera, earpiece, and yes FaceID sensor. (Phones like the Mi Mi

Some non-screen area at the top of the phone is necessary for the proximity sensor, front facing camera, earpiece, and yes FaceID sensor. (Phones like the Mi Mix and Sharp Aquos Crystal tried to move such things to the bottom, but this was impractical) I don't see how having a FaceID sensor justifies the notch any more than the other components do. In fact, since the lack of FaceID sensor decreases the necessary width of the notch it makes even more sense to expand the screen up to the edge of the device.