Ok a friend of mine is giving me his old 3gs or letting me borrow it till I find a job and can replace my broken cell phone. Anyway I am not a apple person so he says that it is jailbroke but I'm not sure about what version of software. Will the 3gs do mobile hotspot and what version of software do I need? I was planning on using by Sims card out of my blackberry with ATT . Should I be able to slip the Sims card in and it rock ok?