Face ID has one important advantage over Touch ID that will become readily apparent this winter: you can quickly unlock your phone with gloves on. That may seem to make the iPhone X a cold weather champ, but there might be a fly in the ointment.
Recently, a small number of iPhone X owners have started to complain on social media that their display stopped registering touches when outside in the cold weather. The most prominent example is this thread on Reddit.
This is definitely not impacting the majority of iPhone X users. There has been plenty of cold weather in Canada over the last week, for example, and the majority of iPhone X users report that their screen works just fine. It's hard to get a handle on exactly how many users are experiencing the issue, but the responses on social media make it seem exceedingly rare.