2. Get the Debug APK to install
Request this app file (called the " APK") if you want to directly install the app on your device. It is not publishable on Google Play.
1. On your app project page, go to the
Publish tab and select Android. 
2. In the Install on device tab, click
Get Debug APK to request the app package. You will receive an email in 24 hours to download the file.