LG VS660 - Manual (Page 272)

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Settings
Device administration
Select device administrators Add or remove device
administrators.
Credential storage
Use secure credentials Check to allow applications to access your
phone’s encrypted store of secure certificates and related
passwords and other credentials. You use credential storage to
establish some kinds of VPN and Wi-Fi connections. If you have
not set a password for the credential storage, this setting is
dimmed.
Install from SD card Touch to install a secure certificate from an
SD card.
Set password Opens a dialog where you can set or change the
password for your secure credential storage. Your password must
have at least 8 characters.
Clear storage Deletes all secure certificates and related
credentials and erases the secure storage’s own password, after
prompting you to confirm that you want to do this.
Applications
You use the Applications settings to view details about the
applications installed on your phone, manage their data, force them
to stop, and to set whether you want to permit installation of
applications that you obtain from websites and email.
Unknown sources Permits installation of applications that you
obtain from websites, email, or other locations other than Android
Market
TM .
WARNING! To protect your phone and personal data, download
applications only from trusted sources, such as Android
Market.