Textasset reads from .txt file encoded in UTF-8. When I play game on unity all the characters are displayed correctly but when I push it to android There are no accent characters (It just ignores them). I opened the .apk and found the actual file with my text in it and noticed that the file is encoded in ANSI. So how to force unity to attach textasset in UTF 8 so android can read accent characters?
Late replay, but:
If you’re using notepad to create .txt files make sure you selected UTF-8 encoding in the box close left to the “Save” button. It worked for me 
PS. It works for every unity project, not only for android