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page.title=Setting up CTS
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<h2>In this document</h2>
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<h2 id=physical_environment>Physical environment</h2>
<h3 id=wifi>Wi-Fi and IPv6</h3>
<p>CTS tests require a Wi-Fi network that supports IPv6, can treat the Device
Under Test (DUT) as an isolated client, and has an internet
connection. An isolated client refers to a
configuration where the DUT does not have visibility to the
broadcast/multinetwork messages on that subnetwork, either by a Wi-Fi AP
configuration or by running the DUT on an isolated sub-network without
other devices being connected.</p>
<p>If you don't have access to a native IPv6 network, an IPv6 carrier network,
or a VPN to pass some tests depending on IPv6, you may instead use a Wi-Fi
access point and an IPv6 tunnel. See Wikipedia <a
href="">list of IPv6
tunnel brokers</a>.</p>
<h3 id=ble_beacons>Bluetooth LE beacons</h3>
<p>If the DUT supports the Bluetooth LE feature, then at least three
Bluetooth LE beacons should be placed within five meters of the DUT for Bluetooth
LE scan testing. Those beacons can be any kind, do not need to be
configured or emit anything specific, and can include iBeacon,
Eddystone, or even devices simulating BLE beacons.</p>
<h2 id=desktop_setup>Desktop machine setup</h2>
<p>CTS currently supports 64-bit Linux and Mac OS host machines.</p>
<h3 id=adb>ADB and AAPT</h3>
<p>Before running the CTS, make sure you have recent versions of both <a
href="">Android Debug
Bridge (adb)</a> and <a
Asset Packaging Tool (AAPT)</a> installed and those tools' location added
to the system path of your machine.</p>
<p>To install ADB, download the <a
href="">Android SDK Tools</a>
package for your operating system, open it, and follow the instructions in the
included README file. For troubleshooting information, see <a
the Stand-alone SDK Tools</a>.</p>
<p>Ensure <code>adb</code> and <code>aapt</code> are in your system path. The
following command assumes you've opened the package archive in your home
export PATH=$PATH:$HOME/android-sdk-linux/platform-tools
<p class="note"><strong>Note:</strong> Please ensure your starting path and
directory name are correct.</p>
<h3 id=JDK>Java Development Kit (JDK)</h3>
<p>Install the proper version of the Java Development Kit (JDK). See the <a
href="{@docRoot}source/requirements.html#jdk">JDK requirements</a>.</p>
<h3 id=CTS_files>CTS files</h3>
<p><a href="{@docRoot}compatibility/downloads.html">Download</a> and open the CTS
packages matching your devices' Android version and all the Application Binary
Interfaces (ABIs) your devices support.</p>
<p>Download and open the latest version of the <a
href="{@docRoot}compatibility/downloads.html#cts-media-files">CTS Media
<h3 id=system_detect>Device detection</h3>
<p>Follow the step to <a
href="">set up your
system to detect your device</a>, such as creating a <code>udev</code> rules
file for Ubuntu Linux.</p>
<h2 id=device_setup>Android device setup</h2>
<h3 id=user_builds>User builds</h3>
<p>A compatible device is defined as a device with a user/release-key signed
build, so your device should be running a system image based on the known to be
compatible user build (Android 4.0 and later) from <a
href="{@docRoot}source/build-numbers.html">Codenames, Tags, and Build
<p class="caution"><strong>Caution:</strong> When used to confirm Android
compatibility of your final system image, CTS must be executed on devices with
a user build.</p>
<h3 id=storage_requirements>Storage requirements</h3>
<p>The CTS media stress tests require video clips to be on external storage
(<code>/sdcard</code>). Most of the clips are from <a
href="">Big Buck Bunny</a> which is copyrighted by
the Blender Foundation under theĀ <a
href="">Creative Commons Attribution 3.0 license.</a></p>
<p>The required space depends on the maximum video playback resolution supported
by the device (See section 5 in the compatibility definition document for the
platform version of the required resolutions.) Note that the video playback
capabilities of the device under test will be checked via the <code></code> APIs for earlier versions of Android and the <code></code> APIs from Android 5.0.</p>
<p>Here are the storage requirements by maximum video playback resolution:</p>
<li>480x360: 98MB
<li>720x480: 193MB
<li>1280x720: 606MB
<li>1920x1080: 1863MB
<h3 id=screen_storage>Screen and storage</h3>
<li>Any device that does not have an embedded screen needs to be connected to a screen.</li>
<li>If the device has a memory card slot, plug in an empty SD card. <em>Use an
SD card that supports Ultra High Speed (UHS) Bus with SDHC or SDXC capacity or
one with at least speed class 10 or higher to ensure it can pass the CTS.</em>
<p class="warning"><strong>Warning:</strong> CTS may modify/erase data on the SD card plugged into the device.</p>
<li>If the device has SIM card slots, plug in an activated SIM card to each slot. If the device supports SMS, each SIM card should have its own number field populated.</li>
<h2 id=config_device>Android device configuration</h2>
<li>Factory data reset the device: <strong>Settings > Backup &amp; reset > Factory data reset</strong>
<p class="warning"><strong>Warning:</strong> This will erase all user data from the device.</em></p>
<li>Set your device's language to English (<strong>United States</strong>) from: <strong>Settings > Language
& input > Language</strong>
<li>Turn on the location setting if there is a GPS or Wi-Fi / Cellular network
feature on the device: <strong>Settings &gt; Location &gt; On</strong>
<li>Connect to a Wi-Fi network that supports IPv6, can treat the Device
Under Test (DUT) as an <em>isolated client</em> (see the <a
href="#physical_environment">Physical Environment</a> section above), and has an
internet connection: <strong>Settings > Wi-Fi</strong>
<li>Make sure no lock pattern or password is set on the device: <strong>Settings &gt; Security &gt; Screen
lock &gt; None</strong>
<li>Enable <strong>USB debugging</strong> on your device: <strong>Settings &gt; Developer options &gt; USB debugging</strong>.
<p class="note"><strong>Note:</strong> On Android 4.2 and later, <strong>Developer
options</strong> is hidden by default. To make them available, go
to <strong>Settings &gt; About phone</strong> and tap <strong>Build number</strong>
seven times. Return to the previous screen to find <strong>Developer
options</strong>. See <a
On-device Developer Options</a> for additional details.</p>
<li>Select: <strong>Settings &gt; Developer options &gt; Stay Awake &gt; On</strong>
<li>Select: <strong>Settings > Developer options > Allow mock locations &gt; On</strong>
<p class="note"><strong>Note:</strong> This mock locations setting is applicable only in Android 5.x and 4.4.x.</p>
<li>Select: <strong>Settings > Developer options > Verify apps over USB > Off</strong>
<p class="note"><strong>Note:</strong> This verify apps step became required in Android 4.2.</p>
<li>Launch the browser and dismiss any startup/setup screen.
<li>Connect the desktop machine that will be used to test the device with a USB cable
<p class="note"><strong>Note:</strong> When you connect a device running Android 4.2.2 or later
to your computer, the system shows a dialog asking whether to accept an RSA key that allows
debugging through this computer. Select <em>Allow USB debugging</em>.</p>
<li> Install and configure helper apps on the device.
<p class="note"><strong>Note:</strong> For CTS versions 2.1 R2 through 4.2 R4</em>, set up your device (or emulator)
to run the accessibility tests with:<br>
<code>adb install -r android-cts/repository/testcases/CtsDelegatingAccessibilityService.apk</code><br>
On the device, enable: <strong>Settings > Accessibility > Accessibility >
Delegating Accessibility Service</strong></p>
<p class="note"><strong>Note:</strong> For CTS 2.3 R4 and beyond on devices that declare the
<code> feature</code>, set up your device to run
the device administration tests with:<br>
<code>adb install -r android-cts/repository/testcases/CtsDeviceAdmin.apk</code><br>
On the device, enable only the two
<code>android.deviceadmin.cts.CtsDeviceAdminReceiver*</code> device
administrators under: <strong>Settings > Security > Select device
administrators</strong>. Make sure the
<code>android.deviceadmin.cts.CtsDeviceAdminDeactivatedReceiver</code> and any
other preloaded device administrators stay disabled in the same menu.</p>
<li>Copy the CTS media files to the device as follows:
<p class="note"><strong>Note:</strong> For CTS 2.3 R12 and beyond, if the
device supports video codecs, the CTS media files must be copied to the
<li>Navigate (cd) to the path the media files are downloaded and unzipped to.
<li>Change the file permissions: <code>chmod u+x</code>
<li>Run <code></code>:
<li>To copy clips up to a resolution of 720x480, run: <code>./ 720x480</code>
<li>If you are not sure about the maximum resolution, try <code>./ all</code> so that all files are copied.
<li>If there are multiple devices under adb, add the -s (serial) option to the end.
For example, to copy up to 720x480 to the device with serial 1234567, run: <code>./ 720x480 -s 1234567</code>