There are many users who are searching, can you mark instagram messages as unread? Well yes you can by putting your phone in Airplane mode. Follow the steps for a complete guide:-
1. The first step is to open your phone’s Control Center or Quick Settings.
2. Now tap on the Airplane icon to activate it.
3. Then after turning on the Airplane mode, make sure that the Instagram app is closed and not running in the background.
4. Now finally you can either see the message from the notification or directly visit the inbox to read the unread message.