If you go to staff with a problem, the only thing they can do for you is put you in the SHU as a protective custody inmate, and that will cause you trouble throughout your entire incarceration. 1  If you complain to staff, you're stuck out in no-man's-land between the staff and inmates. 2  Neither group will help you.
Definition: A 'locked' mobile phone is one that has been restricted by software so that it can only be used with a single network or carrier. Locked mobile phones are usually GSM phones that use a SIM card-hence the use of the term 'SIM lock'.
Some cell phone carriers lock their handsets; this means they will only work with SIM cards from that carrier. This is especially common in the US, where service providers sell the handsets at a discount in exchange for the consumer signing a long-term contract for service.