Many phones, laptops cameras and similar are only guaranteeing functionally by above 0 degree....
Luckily they often operate in lower temperatures too, but not seldomly by hoping they don't get cooled that much themself (because they are e.g. in your pocket).
Luckily they often operate in lower temperatures too, but not seldomly by hoping they don't get cooled that much themself (because they are e.g. in your pocket).