How to remove the words' China Mobile' or' China Unicom' from the mobile phone display?

Taking China Mobile as an example, the words "China Mobile" can not be displayed in the notification bar at the top of the screen by the following steps:

1. Open the phone and find "Settings" in the phone:

2. Open Settings and find "Applications and Notifications":

3. Open the application and notification, and find "Notification and Status Bar Settings":

4. Find "Display Operator Name" in the opened page, and click the button on the right to close it:

5. After closing, the operator's name disappears in the notification bar: