184Settings Lock Screen and SecurityDevice AdministrationManage your device administrators and application installationprivileges.1. From a Home screen, tap Apps > Settings.2. Tap Lock screen and security > Other security Settings >Phone administrators.• Tap Android device manager to allow it to lock or erase alost device.Credential StorageManage your security certificates. If a certificate authority (CA)certificate gets compromised or for some other reason you do nottrust 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 thefollowing Credential storage options:• Storage type: Select a storage location for credentialcontents.• View security certificates: Display certificates in yourdevice’s ROM and other certificates you have installed.• User certificates: View user certificates.• Install from device storage: Install a new certificate fromstorage.• Clear credentials: Erase the credential contents from thedevice and reset the password.