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Unknown sources
Mark the check box to permit installation of applications that you obtain
from web sites, email, or other locations other than Goolge Play Store.
To protect your phone and personal data, download applications only from
trusted sources, such as Goolge Play Store.
Quick launch
Set keyboard shortcuts to launch applications.
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 11.17 About phone.
Development
The Development screen contains settings that are useful for developing
Android applications. For full information, including documentation of the
Android applications and development tools, see the Android developer
web site (http://developer.android.com).
USB debugging:• mark the check box to permit debugging tools on a
computer to communicate with your phone via a USB connection.
Stay awake:• mark the check box to prevent the screen from dimming
and locking when the phone is connected to a charger or to a USB
device that provides power. Don’t use this setting with a static image on
the phone for long periods of time, or the screen may be marked with
that image.
Allow mock locations:• mark the check box to permit a development
tool on a computer to control where the phone believes it is located,
rather than using the phone’s own internal tools for this purpose.