With Smart downloads, recommended videos are automatically added to your downloads to watch offline. Watch videos on-the-go and discover new content without the hassle of searching. Downloads will stop if you disconnect from Wi-Fi, or if your device’s storage is low.
How to download videos with YouTube Premium
Turn on Smart Downloads
From your signed-in YouTube Premium account,
  - Open the YouTube App.
- Tap your profile picture . 
- Tap Downloads . 
- From the Menu , select Settings . 
- Toggle Smart Downloads to on . 
Note: Your device must be connected to the internet to begin downloading videos.
    Turn off Smart Downloads
From your signed-in YouTube Premium account,
  - Open the YouTube App.
- Tap your profile picture . 
- Tap Downloads . 
- From the Menu , select Settings . 
- Toggle Smart Downloads to off . 
Find and watch Smart Downloads
From your signed-in YouTube Premium account,
  - Open the YouTube App.
- Tap your profile picture . 
- Tap Downloads Smart Downloads. 
You’ll see a list of recommended videos selected & downloaded for you based on your watch history.
Remove a video from your Smart Downloads
- Tap your profile picture Downloads . 
- Tap the Menu next to the video you'd like to remove. 
- Select Delete from downloads.
New videos will be downloaded every 7 days and the previously downloaded videos will be replaced.
Change Smart Downloads quality/resolution
From your signed-in YouTube Premium account,
  - Open the YouTube App.
- Tap your profile picture . 
- Tap Downloads . 
- From the Menu , select Settings . 
- Tap Download quality.
- Select your preferred download quality setting from the options listed.
Adjust your storage settings
From your signed-in YouTube Premium account,
- Open the YouTube App and go to your Settings.
- Tap Background & downloads Adjust Smart downloads. 
- Under Storage use, select Custom.
- Use the slider to select the amount of storage you’d like your device to use for Smart downloads.