Universal Access features
VoiceOver
Routing the audio of incoming calls
Siri
Triple-click Home
Zoom
Large Text
White on Black
Speak Selection
Speak Auto-text
Mono Audio
Hearing aid compatibility
Custom Vibrations
LED Flash for Alerts
AssistiveTouch
Universal Access in OS X
TTY support
Minimum font size for mail messages
Assignable ringtones
Visual voicemail
Widescreen keyboards
Large phone keypad
Voice Control
Closed captioning