Samsung SCH-R915ZKACRI - Manual (Page 109)

Settings 105
Passwords
Visible passwords
When enabled, password characters will display briefly as you
touch them while entering passwords.
1. From the Settings menu, touch Location & security.
2. Touch Visible passwords to enable or disable brief displays
of password characters. When enabled, a check mark
appears in the check box.
Device Administration
Select device administrators
Add or remove device administrators.
1. From the Settings menu, touch Location & security.
2. Touch Select device administrators.
Credential storage
Use secure credentials
You can install credentials from an optional installed memory
card, and use the Credential storage settings to allow
applications to access the secure certificates and other
credentials.
Note: You must have installed encrypted certificates from a memory card to
use this feature.
1. From the Settings menu, touch Location & security.
2. Touch Use secure credentials to enable or disable. When
enabled, a check mark appears in the check box.
Install encrypted certificates
Install encrypted certificates from an optional installed memory
card.
Note: You must have installed a memory card containing encrypted
certificates to use this feature.
1. From the Settings menu, touch Location & security.
2. Touch Install encrypted certificates, then choose a
certificate and follow the prompts to install.