Open RTT preferences

Opens the deep link into Settings > Accessibility > Hearing Devices where you can pair Made for iPhone hearing aids and sound processors, plus toggle Hearing Aid Compatibility to improve audio quality on some devi

Opens the deep link into Accessibility > Voice Control to so you can toggle the feature on or off to allow you to use your voice to control your device, even when you are on calls. Page also includes a link to the Voice Control Guide, controls for Language, Commands, Vocabulary, and options for Show Confirmation, Play Sound, Show Hints, Continuous Overlay, and Attention Aware.

Opens into the Display and Text Size section of Accessibility settings and lets you customize features like Bold Text, Larger Text, Button Shapes, On or Off Labels, Reduce Transparency, Increase Contract, Differentiate Without Color, Prefer Horizontal Text, Smart Invert, Classic Invert, Color Filters, Reduce White Point, and Auto-Brightness.

Opens the deep link into Settings > Accessibility > Side Button where you can adjut the Click Speed, Press and Hold to Speak, and Side Button Confirmation for Switch Control and AssistiveTouch.

Enable (or disable) the Live Captions feature.

Opens into Settings > Accessibility > Zoom to let you toggle the feature on or off to magnify the entire screen with a double tap, three-finger drag, and double tap three fingers, as well as features like Follow Focus, Smart Typing, Keyboard Shortcuts, Zoom Controller, Zoom Region, Zoom Filter, Show while Mirroring, and Maximum Zoom Level.