There is no unread message on the mobile phone, but there is still an unread message on the message. How to delete it?

Open Messages preferences, change "Keep Messages"-"Permanent" to "30 days", exit Messages and open it again, and messages over 30 days will be cleared, and basically unread messages will disappear.

Go to the first column of "My mobile phone" in the mobile assistant and click "Find SMS". Finally, you can see (there should be two) your saved contact messages. Right-click menu to delete them directly, and then look at your mobile phone. I think it's gone

Unlock the iPhone to the bottom of the home screen page and find the application information. There are no new messages, but the symbol in the corner indicates that there are 4 unread messages.

Solution: Delete too many short messages and free up space in the short message box. Some applications are pushed, and the mobile phone is set to allow applications to push, so the SMS has been read but the push message is still on. Solution: Clear the message in the shortcut bar of the mobile phone, or cancel the push of the mobile phone application.