https://www.theverge.com/2017/11/9/16631596/apple-iphone-x-cold-weather-screen-bug-software-update

Apple today confirmed an issue causing the iPhone X’s screen to become unresponsive in cold weather, saying that it’s planning a software update to address the issue. Reports of the problem began popping up on the iPhone subreddit community this week, with some users saying it takes only just a few seconds for the phone to freeze up in temperatures around 0 degrees Celsius / 32 degrees Fahrenheit.

“We are aware of instances where the iPhone X screen will become temporarily unresponsive to touch after a rapid change to a cold environment,” the company told Apple blog The Loop. “After several seconds the screen will become fully responsive again. This will be addressed in an upcoming software update.”