If you don’t know how to unread a message on ig
without Wifi then you must follow these steps:-
1. The first step is to swipe down your Quick Settings or Control Center.
2. Now switch off your mobile data or Wifi, whatever you are using for the internet.
3. Make sure to close the Instagram app if it is running in the background.
4. Then finally reopen the Instagram app and then go to the new messages to read them without the sender knowing.