Tablet User Manual

187
Device Administration
To add or remove device administrators:
1. From a Home screen, touch
Apps ➔ Settings
➔
Security .
2. Touch
Device administrators .
Enable or disable installation of non-Google Play
applications.
1. From a Home screen, touch
Apps ➔ Settings
➔
Security .
2. Touch
Unknown sources.
An informational pop-up displays.
3. Read the message and touch
OK to allow installation of
non-Google Play applications.
When enabled, a check mark appears in the check
box.
Warning! Enabling this option causes your tablet and personal
data to be more vulnerable to attack by applications
from unknown sources.
Credential Storage
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 a Home screen, touch
Apps ➔ Settings
➔
Security .
2. Touch
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. Touch a CA certificate to examine its details.
A scrolling screen displays the details.
4. Scroll to the bottom of the details screen and touch
Disable to disable a System certificate or Remove to
remove a User certificate.