The devices should be returned to inmates immediately, prison administrators should then slap themselves in the face one time for implementing them poorly to begin with, slap themselves in the face several times for overreacting to a viral story without having any reason to believe there was an active or imminent problem with any of their inmates, and deliver a tooth-loosening punch to their own faces for thinking they could punish these inmates by taking away their education to cover their screw up.
After that, hire a real IT person who knows what they're doing by paying them decently allowing remote work and not drug testing, and then listen to them.