It's an appropriate concern. It's one where you can reduce risks but not eliminate them.

I downloaded the Road ID app onto my iPhone. I like it, but once I was in Da Boonies and lost the signal, and it sent out an emergency notification that freaked my wife out for a moment.

If you are truly in the middle of nowhere, nothing much will help.

I was concerned about my cardiovascular status enough to get a heart cath. Knowing I have clean coronary arteries gives me a level of confidence about charging up hostile hills in Da Boonies. Before you embark into the great outdoors, you'd want a thorough check-up.