Samsung GT-I9300BLACK Unknown sources, Trusted Credentials, Install from device storage

Unknown sources

This feature allows you to download and install non-Market applications.

1.From the Home screen, tap ➔ Settings ➔ Security.

2.Tap Unknown sources.

A check mark is displayed to indicate it is active.

Warning! Enabling this option causes your phone and personal data to be more vulnerable to attack by applications from unknown sources.

Trusted Credentials

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 the Home screen, tap ➔ Settings ➔ Security.

2.Tap Trusted credentials.

The trusted credentials screen has two tabs:

•System: Displays CA certificates that are permanently installed in the ROM of your device.

•User: Displays any CA certificates that you installed, for example, in the process of installing a client certificate.

3.Tap a CA certificate to examine its details. A scrolling screen displays the details.

4.Scroll to the bottom of the details screen and tap Disable to disable a System certificate or Remove to remove a User certificate.

Caution! When you disable a system CA certificate, the Disable button changes to Enable, so you can enable the certificate again, if necessary. When you remove a user-installed CA certificate, it is permanently deleted and must be re-installed, if needed.

5.Tap OK to return to the certificate list.

When enabled, a check mark appears in the check box.

Install from device storage

Install encrypted certificates from an installed memory card.

Note: You must have installed a memory card containing encrypted certificates to use this feature.

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