Hi Envaal,
Huogo was right, it works like he described above.
One more thing. Data content is copied into the .obb file, so you have to enable it. (Don’t disable it)
Single .apk installs won’t work.
Once the user installs your app from the market, UE4 will automatically download the corresponding .obb file and the plugin will unpack all the necessary data from it at first run.