LG Lucid User Manual page 186

Settings
184
Device administration
Device administrators Add or remove device administrators.
Credential storage
Use secure credentials Checkmark 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
secure credential storage, this setting is dimmed.
Install from SD card Touch to install a secure certificate from a microSD
card.
Set password Opens a dialog box 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.
Encryption
Data Encryption Opens a screen that encrypts data on the device for
security.
Applications
You use the Applications settings menu 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 Checkmark to permit installation of applications that
you obtain from websites, email, or other locations other than Android
TM
Market
WARNING!
To protect your phone and personal data, download applications only from trusted
sources, such as Android Market.
Manage applications Opens a list of all the applications and other
software installed on your phone, along with their sizes. Touch the Menu
Key
.
and touch Sort by size to display applications in order by size.