Will flight attendants send messages to remind every common contact before departure?

Hello! Leave your mobile phone number when booking air tickets, and flight steward will send you push reminders at all nodes of the itinerary, such as check-in seat selection, departure reminder, boarding reminder, flight delay, luggage tray positioning, etc. If you only pay attention to one flight in flight steward, then the app will also dynamically synchronize the itinerary with you through Push.