If you're casting from an Android phone or tablet device you can activate subtitles by following the steps below:
1. Make sure you're in the Tubi app and that you're connected to Chromecast.
2. Tap on the Chromecast controls at the bottom of the screen:
3. Tap on the "CC" button to the right of the play button:
4. Tap on "English Subtitle" and press OK.
To deactivate subtitles tap on None after tapping on CC.
Now subtitles will be activated on your big screen!
Now subtitles will be activated on your big screen!