I wonder what they consider Internet. I know that in a lot of poor nation, extremely poor people. People living on less than a dollar a day have cell phones. They never make voice calls, but they all have plans with unlimited text messaging. I heard a talk from a Doctors without Borders, and these days even death threats usually come by text message. (Doctor without Borders gets a lot of death threats, cause it is a way for someone angry at a community to strike back by depriving them of medical care until the source of the threat is tracked down.) She says even homeless people in the Phillipines living on the street have cells. Of course if you are text messaging you are not illiterate...
She also talked about diagnosis in those conditions.. If you don't have a thermometer, you diagnosis whether someone has a fever by feeling their forehead. You don't need to know how high the fever is in detail, and you can certainly tell mild from severe fever. You can take a pulse with your fingers. If you are going into a post battle scene you can look a soldier and see if there is an exist wound to match the entrance wound to know if the bullet passed through or still in there. The soldier can tell by the pain level if they were gut shot. You see if a leg is broken by whether the person can stand or not, or whether it hurts to try. And what it comes down to, is you can do very effective triage with not instruments. She had a supply of antibiotic and she was able to diagnose bladder infections by examination and asking questions. Since in all the cases where that was the diagnosis the infection was cured by the antibiotics she is confident here diagnosis was right.
She was in the MILF area (Moro International Liberation Front, not hot mamas) and some of the people were so grateful to have medical care they tried to set them up with armed guards. The doctors gently but firmly turned them down: armed guards would be targets for the military, while the military was shooting their guards the military would also shoot the doctors - either accidentally or probably on purpose.
Anyway an amazingly brave woman, and amazing how matter of factly she described all this.