Version: 2017.1 (switch to 2017.2b)
Support for APK expansion files (OBB)
Advanced Unity mobile scripting
Other Versions

Android Scripting

Most features of the Android devices are exposed through the Input and Handheld classes. For cross-platform projects, UNITY_ANDROID is defined for conditionally compiling Android-specific C# code.

For further information, see the Input, Mobile Keyboard and Device Property pages.

Support for APK expansion files (OBB)
Advanced Unity mobile scripting