So a user with the first three episodes of a show downloaded will have the first deleted and the fourth installed after watching the initial content.
Note that the Smart Downloads feature is activated only when you're using Wi-Fi, and not on cellular connectivity. Nonetheless, the newly added functionality should make for a more straightforward experience for many users who don't want to go through the trouble of managing and downloading episodes manually.
We're not seeing Smart Downloads live in our most recent update of Netflix for Android, so stay tuned. The feature will only be available initially on Android phones and tablets, and is focused on episodic series, not movies or specials. But the service can determine with "high confidence" that you'll probably want to continue watching a show you've downloaded. Under "Downloads", users will be able to turn Smart Downloads on or off.
The feature is flawless for those who love binge watching TV shows, don't want to burn through their data allowance, and certainly do not like the process of going through the download process manually. "Whether it is smart downloading or viewing a mobile preview, we realize the best part of Netflix is connecting with the stories you will love in an easier and more fun way", said Cameron Johnson, Director of Product Innovation in a note. This all takes place in the background, but when connected to WiFi, you'll see a notification on your phone to let you know Smart Downloads is in action.
Or you can also do so via App Settings. This changed back in 2016, though, when the developers finally added the feature to their Android and iOS devices worldwide. It also could then automatically download the first episode of the next season when it airs, which could either be convenient or annoying, depending on how you look at it.