I'm using the Active EMS - Phoenix Fire APP on my Galaxy Note 5. I don't monitor it continuously, but check it out as desired. For at least the past month, the screen shows me the same "calls" as my last check. I must "reload" to see the current list.
Going back past a month or so my memory is fuzzy. I believe I posted a comment somewhere regarding new incidents appearing at the bottom of the list. During "busy" times, this resulted in new incidents opening up below the visible screen. I would have to scroll down to see if there were new calls. I suggested posting the new incidents at the top of the list, so any unseen calls would be the oldest. If that "fuzzy" memory is correct, then the list used to auto-refresh. I hope my answer relates to your question.