Watch videos with subtitles and closed captions on iPhone
When you watch video content in the Apple TV app or another supported app, you can see subtitles and closed captions (if available). iPhone usually shows standard subtitles and captions, but you can also choose special accessible captions—such as subtitles for the deaf and hard of hearing (SDH)—if available.
Turn on subtitles and captions in the Apple TV app
While playing video content, tap .
Choose from the list of available subtitles and captions.
Customize the subtitles and captions in supported video apps
Go to Settings > General > Accessibility > Subtitles & Captioning.
If you prefer closed captioning or subtitles for the deaf and hard of hearing when available, turn on Closed Captions + SDH.
Tap Style, then choose an existing caption style or create a new style based on the following:
Font, size, and color
Background color and opacity
Text opacity, edge style, and highlight