Accessibility Hint
Accessibility hint helps users understand the element's purpose when the accessibility label alone is not enough. For example:
<TouchableOpacity
  accessible={true}
  accessibilityLabel="Like"
  accessibilityHint="Likes the song"
  onPress={onPress}>
  <View style={styles.button}>lib
    <Text style={styles.buttonText}>Like</Text>
  </View>
</TouchableOpacity>
In the example announcing only "Like" might be not enough for a screen reader user, so we've added the extra information: "Likes the song."
danger
The field is optional and should only be used if the label itself is not self-explanatory, don't overload a screen reader user with too much information.