Does Ghostface have contact with the outside world?
Ghostface's leaked mori shows him taking a selfie with the Survivor he just killed, and then fiddling with his phone for a bit before putting it away. Now, it can be safely assumed that Ghostface is doing one of two things: He is saving the picture to his phone, or he is sending it to others. While it's entirely possible a 90s flip phone like his probably didn't have the instant texting and social media that modern cell phones do, it also has much, much less memory, and even for Ghostface, it seems odd to save the exact same selfie to his phone over and over again to look at in private. I think it makes more sense that he has some sort of outlet to post his selfies online—but the real question is, where?
Is there some sort of Entity Internet that his phone is connected to? Does he send it to other Killers, and if so, whom? Ghostface is the only modern-age Killer to be from an era with mobile phones that could even be considered capable of social networking outside of telephony except for the Legion and possibly the Wraith; the most recent Killers after them are from just a smidgen before that time period, and even if they could get their hands on texting phones, they would probably chuck them into the campfire as an offering.
So if not the Killers, then whom? The Survivors don't have phones, do they? Likely not; if they did, they'd be using them. Could it be possible that Ghostface sends these photos to people who aren't trapped within the Entity's realm? Could it be that he is the only being trapped within that place to have any semblance of contact with the world outside?
I think it could be a possibility.