Thank you for your interest in Android Compatibility! The links below give you access to key documents and information about the program. As CTS is updated, new versions are added to this page. CTS versions are denoted by R<number> in the link name.
Android 7.1 is the release of the development milestone code-named Nougat-MR1. The source code for the following tests can be synced with the 'android-cts-7.1_r6' tag in the open-source tree.
Android 7.0 is the release of the development milestone code-named Nougat. The source code for the following tests can be synced with the 'android-cts-7.0_r10' tag in the open-source tree.
Android 6.0 is the release of the development milestone code-named Marshmallow. The source code for the following tests can be synced with the 'android-cts-6.0_r19' tag in the open-source tree.
Android 5.1 is the release of the development milestone code-named Lollipop-MR1. The source code for the following tests can be synced with the 'android-cts-5.1_r20' tag in the open source tree.
Android 5.0 is the release of the development milestone code-named Lollipop. The source code for the following tests can be synced with the 'android-cts-5.0_r9' tag in the open source tree.
Android 4.4 is the release of the development milestone code-named KitKat. Source code for Android 4.4 is found in the 'android-cts-4.4_r4' branch in the open source tree.
Android 4.3 is the release of the development milestone code-named Jelly Bean-MR2. Source code for Android 4.3 is found in the 'android-4.3_r2.2-cts' branch in the open source tree.
Android 4.2 is the release of the development milestone code-named Jelly Bean-MR1. Source code for Android 4.2 is found in the 'android-4.2.2_r1' branch in the open source tree.
Android 4.1 is the release of the development milestone code-named Jelly Bean. The source code of the Compatibility Test Suite revisions below is available at the 'android-cts-4.1_r4' tag in the open source tree.
Android 4.0.3 is the release of the development milestone code-named Ice Cream Sandwich. Source code for Android 4.0.3 is found in the 'android-4.0.3_r1' branch in the open source tree.
Android 2.3 is the release of the development milestone code-named Gingerbread. Source code for Android 2.3 is found in the 'gingerbread' branch in the open source tree.
Android 2.2 is the release of the development milestone code-named FroYo. Source code for Android 2.2 is found in the 'froyo' branch in the open source tree.
Android 2.1 is the release of the development milestone code-named Eclair. Source code for Android 2.1 is found in the 'eclair' branch in the open source tree. Note that for technical reasons, there is no compatibility program for Android 2.0 or 2.0.1, and new devices must use Android 2.1.
Android 1.6 was the release of the development milestone code-named Donut. Android 1.6 was obsoleted by Android 2.1. Source code for Android 1.6 is found in the 'donut' branch in the open source tree.
These media files are required for the CTS media stress tests.
There is no Compatibility Program for older versions of Android, such as Android 1.5 (known in development as Cupcake). New devices intended to be Android compatible must ship with Android 1.6 or later.