Certain social media websites are approved, some are blocked. I only have it open for messenger and nothing else. Certainly a lot easier for my wife to get a hold of me than the one uncleared phone on a podium sending someone else to find me. There are strict rules on what we can and can't do. For example, webcams and microphones are hardware removed, USB ports are disabled. In other words, there is no chance of video or audio leaking out.

Also, 100% of executables are blocked as well, so no downloading even approved applications outside of the government package manager. When you're stuck in there for 12 hours, including your breaks, it helps a little as well.