The cell phone is on a table in an office and has to be taken to a cell to activate, and the wire tapping console is in the control room - shoot the panel above the spinny things until it breaks and then use the phone booth outside. After doing one of these two things, there is a short delay and then a T trap allows you to have a tool thrown into the yard or delivered in a van (for 1 credit). Use the tools on the missing toilets in one of the two cells. Bring the tool with you because you need to use it again under the showers.

I've taken the phone to every cell and it has done nothing.

https://www.youtube.com/watch?v=1F4j2ZgTa0U

Another super good way is to download the sonic screwdriver mod and use that. It works for pretty much everything.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=153825236