1. Go to Settings-Notifications and Status Bar-Apply Notification Management-Select Apply-Turn off "Pause Notification" and set "Show details of screen lock notification" to never;
Some models need to be set-status bar and notification-manage notification-select application-turn off the "display details of screen lock notification" and the top preview;
2. Some softwares (such as QQ and WeChat) need to enter settings in the software and turn off the notification to display details;
3. Enter I Manager-Utilities-Application Encryption-Turn on the switch after the software, encrypt the application, and decrypt the message details.
If you still have more doubts, you can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.