User's Manual

151
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 ➔
More ➔ 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
Turn
off
to disable a System certificate, or Remove to
remove a User certificate.
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.
1. From the Home screen, tap ➔
Settings ➔
More ➔ Security .
2. Tap
Install from device storage , then choose a
certificate and follow the prompts to install.
Caution! When you disable a system CA certificate,
the
Turn off button changes to Turn on , 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.
DRAFT
FOR INTERNAL USE ONLY