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 Security for the following Credential storage options:
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Trusted credentials: Display certificates in your device’s ROM and other certificates you have installed.
Install from device storage: Install a new certificate from storage.
Clear credentials: Erase the credential contents from the device and reset the password.
Settings | 78 | Security |
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