For Indonesian viewers watching with subtitles ("Sub Indo"):

The fourth and final season of The Strain consists of 10 episodes and can be found with Indonesian subtitles on various platforms. For a "portable" viewing experience—allowing you to watch on mobile devices or tablets—legal streaming services offer download features for offline viewing. The Strain Wiki Official Viewing & Download Options You can access The Strain Season 4 on these platforms, which support offline downloads: Disney+ Hotstar stream all episodes