You uploaded a debuggable APK. For security reasons you need to disable debugging before it can be published in Google Play-Upload apk to google play

Don't use the debug variant output! Build a release apk. You can do that in Android Studio by going to the menu Build -> Generate Signed APK. Or by executing ./gradlew assembleRelease if you have properly configured signing in the build file. 

 

https://stackoverflow.com/questions/29123404/deploying-android-app-developed-in-delphi-firemonkey-to-google-play-store/29130191

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