U+0128 "Ĩ" Latin Capital Letter I with Tilde Unicode Character

U+0128 "Ĩ" Latin Capital Letter I with Tilde is a precomposed letter used in a small number of languages and phonetic transcription systems to represent a specific vowel sound, most notably the nasalized close front unrounded vowel found in languages such as Portuguese, where it appears in words like "amigo." This character combines a standard capital I with a tilde diacritic placed above it to indicate nasalization, making it distinct from the standalone letter I. It is encoded in the Latin Extended-A block of Unicode and is also used in some African and Native American languages, as well as in the International Phonetic Alphabet for transcription, though it is not a common character in everyday English or most major European languages.