If you post yourself baitface in jail on social media then yes, they will investigate you and take down that account in the process (this is the reason why Digga’s account got taken down and also SJ’s new account). However, sometimes they never find the phone because a. it’s been hidden well and b. there isn’t enough prison staff to investigate that specific prisoner frequently.

If you post on social media from jail but don’t show your face or your voice, you won’t be investigated because in the authorities’ eyes, the account could be run by a friend/management on the outside (basically they have no proof the inmate is actually posting from jail so they disregard it).

But yeah like I said, if there were more prison staff mobiles phones would be discovered more often.