Meriwether Lewis never worried about incoming calls, but then he never married, or had children that we know of.
Smart man ... LOL...
... though we may never know what happened while on his way back east on the Natchez Trace ...
Was he murdered by highwaymen at Grinder's Stand, or did he commit suicide after all that adventuring out west?
It's a mystery, and that's not a bad thing.
Did he ever want an SOS?
Outbound, prolly yes. Inbound, prolly no.
I don't like it when my cell phone vibrates ... I can't imagine if my sat phone/ panic button buzzed me.
I read somewhere that Someone's dad died while Someone was on the mountain. They put Pop on ice 'til Someone got back. That seemed the appropriate move.
There are emergencies, and then there are things people call emergencies just because you're not there.