The fact that the risk is comparatively low is no excuse to disregard it. Furthermore, any number of emergencies can be exacerbated by a lack of phone access -

The fact that the risk is comparatively low is no excuse to disregard it. Furthermore, any number of emergencies can be exacerbated by a lack of phone access - medical emergencies, fires, or any other major problem might have significantly higher fatality rates in the absence of telecommunications.