In this Unity tutorial I show how to install the Andoid Studio and sdk to Build and deploy / publish a Unity 3d game on an android device.
These are the download links to the sdk tools that are compatible with Unity:
And here you can download Android Studio:
After the deployment I recorded a short gameplayer on my very old device S3 Mini. I use this for testing because if the game works on this device, I know that it will run anywhere:-)
See my social profiles here
Production Music courtesy of Epidemic Sound: http://www.epidemicsound.com