Just put five dollars in it, some business cards and you're good to go. Buying a new phone soon and going to use my old one the same way. Learned about it from a Venezuelan.
It's definitely worth a read, one of, it not the saddest stories from Katrina. It's pretty obvious they didn't give a fuck about dying poor people.
Another really good article.
https://www.nytimes.com/2009/08/30/magazine/30doctors.html
It discusses the doctor who essentially euthanized some people as well.
I can't imagine how terrible it would have been. No electricity, stranded with the dying and ill, low on food and water and essentially forgotten. I can't imagine how awful it must have been, the stench must have been absolutely horrible. Over 100 degrees in there.
I'm kind of pissed that they're talking about turning into a place with upscale shopping and upscale apartments (I mean... if they're not too bad I would absolutely move there despite the fact it's probably haunted as a motherfucker.)
Also come to think of it I'm shocked they haven't made a Fallout: New Orleans. That game would be badass. I mean Katrina was essentially an apocalyptic event.