Phonetic is there for you when you need to tell someone a long part number or spell out an email address. Stop saying things like dog, apricot, jelly, frog when you can remove the confusion by saying Delta, Alpha, Juliet, and Foxtrot; no longer have to clarify whether you said dog or frog.
Phonetic allows you to easily switch between the (default) NATO and LAPD spelling alphabets with the tap of a switch and save frequent or complex data as bookmarks for easy future access.