Why is the SMS notification message of opporeno displayed?

For 1, ColorOS 3.0 and above, you can go to mobile phone settings-notification and status bar-notification management-message (SMS)-turn on the relevant notification switch to try;

2. For other versions, you can try it by entering the switch of mobile phone settings-mobile phone settings-security and privacy (security service)-notification center-turn on notification (display information notification in the status bar).