When an article contains multiple images, mobile takes the first image on the page, that isn't inside a template. For example, when you watch the article about Geert Wilders (//nl.wikipedia.org/wiki/Geert_Wilders) the mobile app uses the image (//commons.wikimedia.org/wiki/File:Jozias_van_Aartsen.jpg). The image is not suitable for the header as it doesn't show the subject, however in the context on the full article it is a correct image. There is a suitable image earlier on the page, but it is in a template. Since this template is a infobox, the image is perfect for the header as it has to describe the subject. So it would be nice if the mobile app used that image instead. This doesn't occur on the mobile website, only when using the mobile app.