Open Settings. Select Phone > Phone management > Security settings > Certificate management.

Digital certificates are used to verify the origin of web pages, e-mail servers, software packages, or other data. Certificates can only be trusted if their origin is known to be authentic.

To add certificates to your device, you can download them from web pages or receive them in messages. Scroll to a certificate, and press the scroll key. Select Save and from the following:

To add certificates to your device, you can download them from web pages or receive them in messages. Select a certificate, Save and from the following: