I downloaded the SharePoint App for Android and tried to access my files. I can see them in normal document libraries. But whenever I enter a document set, the files are not shown. Is this a common problem? Did anybody experience the same behaviour? Are doc sets supported by the app?
Perhaps you could configure a
new view>under the
Folders header select
show all items without folders.
Are your documents visible this way? If so, you could try setting this as the mobile view.
Here is a related post on a similar subject.