sigh Humans have survived for hundreds of thousands of years without cellphones. For any new tech, you can continually imagine scenarios where survival "absolutely depends on" having this tech.
How about this? You're sitting in your ISS sleep capsule and suddenly the station starts to depressurize. You hop into your reentry-safe spacesuit and exit the station, set the suit to auto-reentry and then aero-brake from Mach 18 to 0 and touch down safely in your backyard with your parachute. See? A reentry safe single-person spacesuit is absolute essential to survival.
Your example is that you pass out at a concert with literally thousands of people around and no one helps you. Or you are drunk and a guy is hitting on you. Or your kid is missing.
And you call the person you are responding to ridiculous.
Cellphones have made people into helpless, scared sheep.