Genuinely curious, what are they using to access the Internet? I'm struggling to believe they brought smartphones with them that are universally compatible with the cell networks? Do they have PCs in the barracks and the dudes are just huddled around having the time of their lives?
WiFi is a standard protocol. Russians are also clever with electronics. Gaining favor with the new guys is as easy as giving them an old phone. WiFi still works.
I don't think most people fighting for Russia are super indoctrinated on the Russian side; opportunistic, morally corrupt, maybe, but not super jaded. Even if you're fighting in dubious circumstances, the level of NK dystopian cult insanity is next level crazy. I can't picture anyone that is around those guys being totally passive about the extent of bowdlerization and disinformation present in NK. Like you've got a bigger humanitarian obligation to show those kids that they are living in The Hunger Games IRL.
I would expect it would be some kind of landline unless it is far away from the front. A lot of people have gotten killed because they had a device that was transmitting that could be targeted by missiles and drones.
I can't imagine why they would have phones of any kind, let alone smartphones. If there's any truth to this article I'd say it's the Russians who went like 'Oh, you've never seen porn before? Well check this out!'
Supposedly Russia's military comms were so terrible that they ended up adopting smart phones en masse and use plain old cellular and messaging apps like Telegram instead.