Bought 2 new iPhone x 64gb from Verizon. Set up both on Friday. The face ID worked for one day on one and the other one is fine. Called Apple help today and went through some trouble shooting and my problem was escalated to an Apple engineer. They said it needs to be taken into an apple repair facility. I took it in today and they could not fix it, so they are ordering me a replacement phone. Although they had an identical replacement phone in the store, which i saw, they would not replace it with that one. The Store manager said it had to be replaced with a service department unit to be ordered because I bought it from Verizon and not Apple. They estimated that it would take up to 5 business days. The service tech said that Apple Corporate has requested that the store send this defective phone back to corporate service to examine the reason for the failure. The error code under settings reads " a problem has been detected with the truedepth camera. Face id has been disabled"