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Credential storage11.6.7
Use secure credentials
Mark the check box to allow applications to access your phone’s encrypted
store of secure certificates and related passwords and other credentials.
Credential storage is used 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 encrypted certificates from the microSD card.
Set password
Touch to set or change a password for the credential storage (at least 8
characters).
Clear storage
Touch to clear credential storage of all contents and reset its password.
Applications11.7
You use the Applications settings to view details about the applications
installed on your phone, to manage their data and force them to stop, and
to set whether you want to permit installation of applications that you
obtain from web sites and email.
Unknown sources
Mark the check box to permit installation of applications that you obtain
from web sites, email, or other locations other than Android Market.
To protect your phone and personal data, download applications only from
trusted sources, such as Android Market.
Manage applications
Touch to manage and remove installed applications.
Running services
Touch to open a list of services—applications or parts of applications that
provide services to other applications, or that run even when their main
application isn’t running. Examples include the Android onscreen keyboard
and the small portion of Google Talk that always listens for incoming
messages. Above each service, one or more gray bars show what processes
the running service needs and how much memory they're using (how much
memory you would recover if you stopped the service). Depending on the
service, when you touch it in the list it either opens a dialog in which you
can stop it or opens its Settings screen.
Storage use
Touch to view available memory and the memory used by applications on
your phone.
Battery use
Touch to view the amount of power consumed by your phone. It also
shows which applications consume the most battery power. For more
information, refer to section 11.16 About phone.