There are always short messages on mobile phones for no reason. When I opened it, I saw nothing.

I suggest you: 1. Turn the machine on and off and try again.

2. Drop down the top curtain menu to see if there are unread messages.

3. Check whether the alarm clock or calendar has a setting reminder.

3. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ), restore the factory settings (enter the phone settings-reset-restore the factory settings) or send the phone to the nearest Samsung service center for testing and further processing.