Your text will look the same on an iPhone, an Android, a PC, and a Mac.
For example, a converter might replace a standard “A” (U+0041) with “𝗔” (U+1D5D4, MATHEMATICAL BOLD SANS-SERIF CAPITAL A) or “𝔄” (U+1D504, MATHEMATICAL FRAKTUR CAPITAL A). These characters exist in Unicode for specific technical contexts—mathematical notation, phonetic transcription, or historical orthography. But in the hands of a converter, they are repurposed as style mimics: faux-bold, faux-italic, faux-fraktur, faux-serif. The visual flavor of Times New Roman is approximated by selecting alternative glyphs that happen to look similar. times new roman font to unicode converter