Sorry dude, I disagree 10000%, those people died of stupidity not offroading.never offroad alone with one vehicle. it's the #1 safety rule for all jeeps. sadly some do not follow the rule and pay with their lives.
cell phone service or not, it won't help in some cases.
in this case, someone even came to the scene, they said dont worry a tow truck is on the way.
they had the engine running to stay warm.