The Utility key can open utility areas, which usually leads to ladders to the roof or ventilation. This key is useful if you plan to escape from outside during night, but like the cell key, it can be avoided if you make a hole leading to the outside. It open the doors that lead to the exterior yard, sometimes also an inner yard. The Entrance key is only useful between 22:00 and 10:00, when exterior doors are locked. This key can sometimes be avoided by making a hole in your cell, but some areas will still require cell keys like the previously mentioned sub-sections. the area separating the cells and everything else in Jungle Compound requires a cell key). It allows the player to open all cell doors, and, in certain prisons, a sub-section of the prison containing all the cells (eg. The Cell key is only useful between 23:00 and 8:00, when cells are locked.
On Console/Mobile, the order is Cyan (Utility), Green, Purple, Red, and Yellow. On PC, the order is Yellow, Orange (Utility), Purple, Red, and Green.
The guards will have certain keys based on their order in the pre-game screen.
