138
4.
Tap
Change SIM PIN
.
5.
Enter your old SIM PIN code and tap
OK
.
6.
Enter your new SIM PIN code and tap
OK
.
7.
Re-type your new SIM PIN code and tap
OK
.
Make passwords visible
When enabled, password characters display briefly as you
touch them while entering passwords.
1.
From a Home screen, touch
Settings
➔
Security
.
2.
Touch
Make passwords visible
to enable or disable brief
displays of password characters.
When enabled, a check mark
appears in the check
box.
Device Administrators
To add or remove device administrators:
1.
From a Home screen, touch
Settings
➔
Security
.
2.
Touch
Device administrators
.
Unknown Sources
To enable or disable installation of non-Google Play
applications:
1.
From a Home screen, touch
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.
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
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.
