Android is a popular open-source operating system for smartphones and tablets. Unity includes native support for the Android platform which means you can use Unity and its tools to create and deliver 2D and 3D applications for Android.
Before you begin to develop an Android application in Unity, check Unity’s requirements and compatibility documentation for Android to make sure you’re aware of any limitations for developing a Unity application for this platform.
For general information about creating for Android, see Android’s developer documentation.