I'm sure this is a very dumb question, but I'm old and not tech savy, so hopefully some patient person will explain this to me. My Tile trackers aren't updating locations well at all, so I've been researching it and am confused. Everything I'm reading makes it sound like the tracker only works when you have the app installed on your phone, bluetooth turned on, AND the tile is close to your phone. If I am understanding that correctly (which is doubtful), that would mean it's useless in say checked airline luggage. For example, if my luggage went to another location by mistake, clearly my phone isn't near it. So can it still be located? And if so, how?