What is the reason why the notification bar is not displayed when the mobile phone receives the SMS?

It may be that the notification bar display function is not turned on, or the third-party software prevents the notification bar from displaying.

1. Find the SMS management interface in the mobile phone and see if the notification bar display function is set. You can set the notification bar display by clicking the floating notification.

2. If the problem still exists, it is caused by third-party software. You can uninstall third-party software that may cause this situation first.

3. If you still can't display SMS after uninstalling, please back up the phone data such as phone book, SMS and multimedia materials, and try to restore the phone to factory settings.