Can I be charged of a crime for something I said to my boyfriend during a jail phone call while he was incarcerated or making phone calls for him on behalf of other inmates?

If you are relaying messages from your inmate to people on the outside that further commit a crime on the information you passed, then you could be looking at some serious charges. If you are making calls on behalf of other inmates, it's not a crime but it might jam up your inmate or others inside for circumventing the rules if they somehow find out.