In the desktop and web-apps, if there is a new comment or something you haven't seen a little red bell shows up on that particular card. But on Android and iOS this is not the case. It's really hard to tell what you need to be looking at when you see a blue dot on a board. You can find it through the notification center, which isn't that great of an experience especially when you are already looking at that board. Is there a setting to turn this on on the mobile applications? Thanks.