I can't see the display at the top of the mobile phone screen when I receive the text message. How to solve it?

Reason: The notification setting of information is turned off in the mobile phone notification. Let's use an OPPO mobile phone to demonstrate the setting method of allowing information notification:

First, open the "Settings" of the mobile phone, find the "Notification and Status Bar" and click Open.

Second, find "Notification Management" in the interface and click Open.

3. Find "Information" in the application list and click to enter the information notification setting interface.

4. After entering the information notification setting interface, first open "Allow Notification" at the top.

5. Then scroll down, find the item "information notification", and finally turn on the switch on the right.