Vivox3l has no SMS reminder. Open the SMS page before you can see the unread SMS reminder. What happened?

Vivox3l mobile phone SMS does not remind you. After opening the SMS page, you can only see unread SMS reminders. The possible reasons are as follows:

If the SMS screen lock notification is not turned on, find the notification management in the settings and turn on the SMS screen lock notification switch;

Mobile phone configuration is low, storage is small, response is slow, and it can't capture new short message information in time, and it can't remind you in time;

There are a lot of installed applications, and the system resources are insufficient, so it is impossible to grab new SMS information in time and remind them in time.