The red rice mobile phone sends a message, and the lock screen display can't see what's going on.

Because the corresponding permissions are not open.

First of all, we can enter the main page of system settings and click the option of "authorization management". Then on the authorization management page, click the "Application Rights Management" setting item.

Then on the application management page, find the WeChat or SMS application, and click to enter the permission setting page. Finally, click the "Lock Screen Display" setting item and set it to "Allow".