Step 1: Go to Settings > Accessibility to begin customizing iPhone’s accessibility features.
Step 2: Tap VoiceOver and turn on to have an audio reader for screen elements.
Step 3: Enable Mono Audio and Noise Cancellation for hearing aids.
Step 4: Turn on LED Flash for Alerts to see a flash with notifications if sounds are muted.
Step 5: Under Subtitles & Captioning, enable Closed Captions for media playback.