need to worry about managing applications beyond installing, opening, and using
them. The operating system manages how they use memory and other resources
automatically. But there are times when you may want to know more about how
applications are using the memory and other resources in your phone.
Applications use two kinds of memory in your phone: storage memory and RAM.
Applications use storage memory for themselves and any files, settings, and other
data they use. They also use RAM (memory that is designed for temporary storage
and fast access) when they are running.
All phones have internal storage. This is the memory where most applications and
many kinds of files and data for those applications are stored. The operating system
manages and carefully guards internal storage, because it can contain your private
information; you can’t view its contents when you connect the phone to a computer
with a USB cable.
Depending on your model of phone, your phone also has either internal USB storage
or a removable SD card. This is the memory whose contents you can view and copy
files to and from when you connect your phone to a computer (as described in
“Connecting to a computer via USB” on page 67). Some applications are also
designed to be stored in this memory, rather than in internal memory, by default or as
an option.
The operating system also manages how applications use your phone’s RAM. It only
allows applications and their component processes and services to use RAM when
they need it. It may cache processes that you’ve been using recently in RAM, so they
restart more quickly when you open them again, but it will erase the cache if it needs
the RAM for new activities.
You manage how applications use storage memory directly and indirectly in many
ways as you use your phone, for example, by:
G Installing or uninstalling applications (see “Market” on page 341 and “Uninstall an
application” on page 52)
G Downloading files in Browser, Gmail, and other applications
G Creating files (for example, by taking pictures)
G Deleting downloaded files or files you created (see “Managing downloads” on
page 54 and the documentation for the applications you use)
G Using a computer to copy files to or delete files from your USB storage or SD card
(see “Connecting to a computer via USB” on page 67)
G Changing whether an application is installed in internal storage or in your phone’s
USB storage or SD card, if the application supports it (see “Change where an application
is stored” on page 52)
You rarely need to manage how applications use RAM: the operating system does this
for you. But you can monitor how applications use RAM and stop them if they
misbehave as described in “Stop a misbehaving application” on page 52.
Open the Manage applications screen
s Press Home , press Menu , and touch mANAGE APPS.
OR
s Open the Settings application and touch aPPLICATIONS > mANAGE
APPLICATIONS.
The Manage Applications screen has four tabs, with lists of applications and their
components in each. At the bottom of each tab is a graph of the memory used by
the items in the list and amount of free memory.
s Touch an application, process, or service in a list to open a screen with details
about it and, depending on the item, to change its settings, stop it, uninstall it, and
so on.
Most of these tasks are described in this section.
s Touch the dOWNLOADED tab to view the applications you’ve downloaded from
Market or other sources.
s Touch the aLL tab to view all the applications installed on your phone.
The list includes applications that are bundled with your release of Android and
applications you downloaded from Market or other sources.
s Touch the Usb STORAGE or sd CARD tab (depending on your model of phone) to
view the applications installed there.
Checked items are installed on your USB storage or SD card. Unchecked items are
installed in your phone’s internal storage, but are designed so that you can move
them if you want. See “Change where an application is stored” on page 52.
s Touch the rUNNING tab to view the applications and their processes and services
that are running or cached.
Get details about an application
1 Open the Manage applications screen.
2 Touch an application, process, or service.
The Application Info screen for each application lists its name and version, along
with details about the application. Depending on the application and where it came
from, it may also include buttons for managing the application’s data, forcing the
application to stop, and uninstalling the application. It also lists details about the
kinds of information about your phone and data that the application has access to.
DIfferent kinds of applications have different kinds of information and controls, but
commonly include:
G Use the FORCE STOP button to stop an application that is misbehaving (see
“Stop a misbehaving application” on page 52).
G If you installed the application from Android Market or another source, you can
use the UNINSTALL button to remove the application and all of its data and settings
from the phone. See “Market” on page 341 and “Uninstall an application”
on page 52 for more information about uninstalling and reinstalling applications.
G Storage Gives details about the amount of phone storage that an application
uses.
G You can delete an application’s settings and other data by touching the ¢LEAR
DATA button.
G You can use the Move to USB storage or Move to SD card (depending on your
model of phone) and the Move to phone buttons to change where some applications
are stored; see “Change where an application is stored” on page 52.
G Cache If the application stores data in a temporary area of the phone’s memory,
lists how much information is stored, and includes a button for clearing it.
G Launch by default If you have configured an application to launch certain file
types by default, you can clear that setting here.
G Permissions Lists the kinds of information about your phone and data the
application has access
Stop a misbehaving application
You can monitor how much RAM running applications and cached processes are
using and if necessary, stop them.
1 Open the Manage applications screen.
2 Touch the Running tab.
3 Press Menu , and touch Show cached processes or Show running
services to switch back and forth.
The Running tab shows the applications, processes, and services that are
currently running or that have cached processes and how much RAM they are
using. The graph at the bottom of the screen shows the total RAM in use and the
amount free.
You can touch a misbehaving application, process, or service and in the screen
that opens touch the Stop button. You can also touch the Report button, to send
the developer information about how the application misbehaved on your phone.
Important Stopping an application or operating system processes and services disables one or
more dependant functions on your phone. You may need to restart your phone to
restore full functionality.
Uninstall an application
You can uninstall applications you downloaded from Market and other sources. (You
can also use Market to uninstall applications you downloaded from there; see
“Managing your downloads” on page 348)
1 Open the Manage applications screen.
2 Touch the Downloads tab.
3 Touch the application you want to uninstall.
4 Touch the Uninstall button.
5 Touch OK in the screen that asks you to confirm you want to uninstall the
application.
Change where an application is stored
Some applications are designed to be stored on your phone’s USB storage or SD card
(depending on your model of phone), rather than in internal storage. Others are
designed so you can change where they are stored. You may find it helpful to move
large applications off of your internal storage, to make more room for other
applications that don’t offer the option. Many large applications are designed this way
for exactly this reason.
1 Open the Manage applications screen.
2 Touch the USB storage or SD card tab.
The tab lists the applications that must be or can be stored on your phone’s USB
storage or SD card. Each application lists the amount of storage it uses on your
phone’s internal storage (even when not stored there, all applications use at least a
small amount of internal storage).
Applications that are stored on your phone’s USB storage or SD card are checked.
The graph at the bottom shows the amount of memory used and free of your
phone’s USB storage or SD card: the total includes files and other data, not just the
applications in the list.
S Touch an application in the list.
The Storage section of the application’s details screen shows details about the
memory used by the application. If the application can be moved, the Move
button is active.
S Touch Move to USB storage or Move to SD card to move the bulk of the
application from the phone’s internal storage.
S Touch Move to phone to move the application back to the phone’s internal
storage.
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