While modern Yi is being proposed as a syllabary of 819 characters the Yi tribes have been subjected to separation throughout a majority of their history, thus this entry can be assumed as a collection of a longer history of Yi writing that dates back to classical Yi and into modern reformations of Yi.
While radicals were used in Classical Yi the use of radicals has become less prevalent in the modern syllabic interpretation due to multiple readings of a single syllable (read m̥ and m under Ding et al. 91:446 in Daniels and Bright, 1991, 240)Unicode Chart 
Maps
Https://upload.wikimedia.org/wikipedia/commons/d/d2/Yi_autonomous_prefectures_and_counties_in_China.png "Yi autonomous prefectures and counties in China" by Abrahamic Faiths licensed under CC BY-SA 4.0
DISCLAIMER: This script is still being researched
Data
| ISO 15924 | Yiii 460 |
|---|---|
| Type | Syllabary* |
| Family | Yi |
| Diacritics | Yes* |
| Contextual Forms | Yes* |
| Capitals Used | No |
| Glyphs | 819 |
| Earliest Date | 1470 CE |
| Latest Date | Present |
Overview
Bibliography
| Author | Year | Publication | Publisher |
|---|---|---|---|
| Shi, Dingxu | 1996 | The World's Writing Systems, The Yi Script, 239-242 | Oxford University Press |