Solid half of this is from spending time in the country myself, but there are several tech journalist websites that have done limited profiles on some of the physical phone units that are available, and I think even the feds now admit that there are in fact multiple land and satellite connections to the broader internet in use in the DPRK with enough traffic volume that the only way the narrative of only people at universities or upper officials in the party being able to access the internet does not hold up. People show up on the Steam network in the DPRK all the time these days too, just downloading a shitload of games or doing the steam DRM check-ins, and then going back offline so they can use the internet for other stuff while gaming.