How to enable subtitles and captions in iOS 14 for iPhone/iPad/iPod Touch

Open the Settings app . Note: The Settings app icon may appear in a different place on your home screen than shown in our example, below.
In the Settings app, scroll down and select Accessibility from the list.
On the Accessibility screen, select Subtitles & Captioning.
On the Subtitles & Captioning screen, select Closed Captions + SDH to set the toggle switch to On.
To customise how Closed Captioned + SDH look, select Style.
Choose from the preconfigured options:
- Transparent - The default subtitle style.
- Large Text - Subtitles with large text.
- Classic - White text over a black background.
- Outline Text - Large white text with a black text outline.
- Or, choose Create New Style.
If you select Create New Style, you can customise every aspect of how the captions appear:
- Text: Choose which font to use, the text size and text colour.
- Background: Customise the colour and background opacity.
- Advanced options: Set the text opacity, text edge style, and text highlight.
The preview at the top of the screen shows how Closed Captioned + SDH will appear.
When you are happy with your settings, you can return to the home screen page of apps by:
- On devices with Face ID: Swipe up from the bottom of the screen.
- On all other devices: Press the home button once.