Earlier quoted context omitted.
> - you are in a terrible accident - there is no one around you to call an ambulance - you can’t call an ambulance yourself, because you are knocked out or can’t move Increasingly large odds after a certain age, and not small if you do certain sports (e.g. trekking, climbing, etc) regardless of age. In fact, older people falling accidents is so common, a proverb in a European country says: "The elderly die either fro…
Likely your Apple Watch won't be able to call for help if you're injured trekking or climbing, unless there's a cell tower on the mountain. Having personally been run over cycling, multiple passersby called 911 for me immediately, and I was in a ambulance in less than 10min.
Don't know about the US, but in several mountains I've been on around the world (not in developing countries though), signal was just fine. It might not work for Everest, or the remotest part of the Rockies, but most hikings/treks are not in such places...