Credential Storage
Manage your security certificates. If a certificate authority (CA) certificate gets compromised or for some other reason you do not trust it, you can disable or remove it.
1.From a Home screen, tap
Apps > 
Settings.2.Tap Lock screen and security > Other security settings for the following Credential storage options:
•Storage type: Select a storage location for credential contents.•View security certificates: Display certificates in your device’s ROM and other certificates you have installed.
•User certificates: View user certificates.•Install from device storage: Install a new certificate from storage.•Clear credentials: Erase the credential contents from the device and reset the password.
Advanced Security Settings
Use these options to configure advanced security settings.1.From a Home screen, tap
Apps > 
Settings.2.Tap Lock screen and security > Other security settings for the following Advanced options:
•Trust agents: Perform selected actions when trusted devices are connected. (Only displays when a secure screen lock is set.)
-To view Trust agents, set up a secured screen lock (Password, PIN, or Pattern). For more information, see Set a Screen Lock.
•Pin windows: Pin an app on your device screen, preventing access to other features of your device.
•Usage data access: View the applications that can access your device’s usage history.
•Notification access: View the applications that can access notifications you receive on your device.
•Do not disturb permission: View which apps have permission to change the Do not disturb settings.
Settings | 75 | Lock Screen and Security |
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