Same question. Another pain is that when app was uninstalled, the UE4Game folder will not be auto removed. I think that is a bad user experience. Why design this like that? Is there any pros or limitation?
I found a global variable GFilePathBase at line 865 in file \Engine\Source\Runtime\Launch\Private\AndroidJNI.cpp. It is assigned to ExternalStorageDirectory(/storage/sdcard0) of . And another global variable GExternalFilePath at line 926 is assigned to ExternalFilesDir(/storage/sdcard0//data/package/files), I think this is what we looking for. But now I don’t have any idea to modify it to suit this purpose. Maybe someone else has any idea or experience?