Oppo mobile phone has no SMS, but there is a prompt tone. What is the situation?

In notification management, disabling the notification permission of the app will also cause such a result.

If the above methods can't be solved, you can see which programs are running in the background, sometimes it may be program reminder update or message push.

Check the status bar prompts of some software to see if it is turned on.

Check the mobile phone management software, it may be that the intelligence intercepted the notification.

Turn on the harassment interception of the mobile phone to see if the short message is intercepted as soon as it comes.

Or the app store is reminding news or upgrading reminders.