2. In the setting interface, find the corresponding security options and click Enter. As shown in the figure below:
3. After entering the mobile phone security settings, find the option corresponding to the application lock and open it. As shown in the figure below:
4. Enter the fingerprint, face and password for verification. As shown in the figure below:
5. In the next interface, just turn on the application lock switch. After this setting, even if the mobile phone is taken away, you can't see the chat information.