The automatic substitution of certain characters with their typographically correct counterparts on Apple’s mobile operating system provides enhanced text presentation. For instance, straight quotation marks are replaced with curly (or “smart”) quotes, and multiple hyphens can be converted into em dashes. This feature operates system-wide within text fields.
This functionality contributes to a polished and professional visual appearance in written communication. By default, it is enabled across the iOS platform, streamlining the formatting process. Its introduction marked a shift toward greater attention to detail in mobile typography, offering users an improved writing experience without requiring manual adjustments.