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 9
Android 9 is the release of the development milestone code-named P. The source code for the following tests, including tests for instant apps, can be synced with the 'android-cts-9.0_r1' tag in the open-source tree.
- Android 9.0 R1 Compatibility Test Suite (CTS) - ARM
- Android 9.0 R1 Compatibility Test Suite (CTS) - x86
- Android 9.0 R1 CTS Verifier - ARM
- Android 9.0 R1 CTS Verifier - x86
- Android 9.0 R1 CTS for Instant Apps - ARM
- Android 9.0 R1 CTS for Instant Apps - x86
Android 8.1
Android 8.1 is the release of the development milestone code-named Oreo-MR1. The source code for the following tests can be synced with the 'android-cts-8.1_r8' tag in the open-source tree.
- Android 8.1 R8 Compatibility Test Suite (CTS) - ARM
- Android 8.1 R8 Compatibility Test Suite (CTS) - x86
- Android 8.1 R8 CTS Verifier - ARM
- Android 8.1 R8 CTS Verifier - x86
Android 8.0
Android 8.0 is the release of the development milestone code-named Oreo. The source code for the following tests can be synced with the 'android-cts-8.0_r12' tag in the open-source tree.
- Android 8.0 R12 Compatibility Test Suite (CTS) - ARM
- Android 8.0 R12 Compatibility Test Suite (CTS) - x86
- Android 8.0 R12 CTS Verifier - ARM
- Android 8.0 R12 CTS Verifier - x86
Android 7.1
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_r20' tag in the open-source tree.
- Android 7.1 R20 Compatibility Test Suite (CTS) - ARM
- Android 7.1 R20 Compatibility Test Suite (CTS) - x86
- Android 7.1 R20 CTS Verifier - ARM
- Android 7.1 R20 CTS Verifier - x86
Android 7.0
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_r24' tag in the open-source tree.
- Android 7.0 R24 Compatibility Test Suite (CTS) - ARM
- Android 7.0 R24 Compatibility Test Suite (CTS) - x86
- Android 7.0 R24 CTS Verifier - ARM
- Android 7.0 R24 CTS Verifier - x86
Android 6.0
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_r31' tag in the open-source tree.
- Android 6.0 R31 Compatibility Test Suite (CTS) - ARM
- Android 6.0 R31 Compatibility Test Suite (CTS) - x86
- Android 6.0 R31 CTS Verifier - ARM
- Android 6.0 R31 CTS Verifier - x86
Android 5.1
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_r28' tag in the open source tree.
- Android 5.1 R28 Compatibility Test Suite (CTS) - ARM
- Android 5.1 R28 Compatibility Test Suite (CTS) - x86
- Android 5.1 R28 CTS Verifier - ARM
- Android 5.1 R28 CTS Verifier - x86
Android 5.0
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 5.0 R9 Compatibility Test Suite (CTS) - ARM
- Android 5.0 R9 Compatibility Test Suite (CTS) - x86
- Android 5.0 R9 CTS Verifier - ARM
- Android 5.0 R9 CTS Verifier - x86
Android 4.4
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 4.4 R4 Compatibility Test Suite (CTS) - ARM
- Android 4.4 R4 Compatibility Test Suite (CTS) - x86
- Android 4.4 R4 CTS Verifier - ARM
- Android 4.4 R4 CTS Verifier - x86
Android 4.3
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
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
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
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
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
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
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
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.
CTS Media Files
These media files are required for the CTS media stress tests.
Older Android Versions
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.