Did you know if you are outside for too long in cold weather your phone’s battery can die?
Once temperatures dip below 32 degrees, you are running a risk of the phone’s charge draining quickly or completely shutting down.
The best way to combat this behavior is simply to keep your Android device or iPhone warm! Make sure to carry your phone in your pocket when outside, or keep an extra battery pack handy!
Source: https://www.cnbc.com/2019/01/31/your-phone-will-turn-off-if-its-too-cold-heres-how-to-keep-it-warm.html