The default interface on Apple’s mobile operating system provides access to a specialized set of characters beyond the standard alphanumeric layout. This feature allows users to insert symbols, punctuation marks, and other non-letter characters directly into text fields. As an example, one can readily access currency symbols like or , or mathematical symbols like or .
This capability is vital for efficient communication across a range of contexts, including technical writing, multilingual correspondence, and general messaging. Its inclusion streamlines the composition process, eliminating the need to copy and paste characters from external sources. The evolution of mobile keyboards has seen the increasing integration of such specialized character sets to meet the diverse needs of users.