Chinese perpetual calendar vivo mobile phone lock screen does not remind

You can press and hold Application-Notifications-Permission Notification (open), lock the screen and banner (tick), click the default channel of the system, and so on. Confirm whether the license notice is turned on and whether the screen lock is selected. If it still doesn't work, you can open Settings-Battery-More-Abnormal Power Optimization and select No Optimization to see if the system has been updated to version A08.