Not so much of an issue if you're hiking around well-populated areas with celular coverage, starting with day hikes and eventually extending to overnight. Or by camping with your car.
I must admit I was pretty stupid to do Torres del Paine alone with little experience and bad equipment, but hey, I was 19.
I've done it two more times since then, both alone. But one detail worth mentioning is that for famous hikes like TdP, you're rarely alone, there are usually dozens of people doing the same hike, and you end up teaming up with them and hiking together. I'm still good friends with most of the people I met on the trail, especially remote trails.
I must admit I was pretty stupid to do Torres del Paine alone with little experience and bad equipment, but hey, I was 19.
I've done it two more times since then, both alone. But one detail worth mentioning is that for famous hikes like TdP, you're rarely alone, there are usually dozens of people doing the same hike, and you end up teaming up with them and hiking together. I'm still good friends with most of the people I met on the trail, especially remote trails.