This attribute allows you to be explicit about the language VoiceOver uses to read a string. This attribute lets you keep a neat visual string of ‘1234’, but when marked with [.accessibilitySpeechSpellOut: true] this is read by VoiceOver as ‘1 2 3 4’. let attributedString = NSMutableAttributedString(string: "Live radio") let range = attributedString.string.range(of: "Live") attributedString.addAttributes([.accessibilitySpeechIPANotation: "līv"], range: NSRange(range!, in: attributedString.string)) liveRadio?.accessibilityAttributedLabel = attributedString