OBJ emoji is an emoji that is displayed by an app when you recieve a message or post with an unrecognizable emoji.
The OBJ emoji replaces the actual emoji and shows you the rectangle box to help make the code of the app functional and bug free.
the OBJ Facebook character or emoji in facebook is the default placeholder for the text, symbol or emoji that is unrecognized
updating your app and your operating system helps you fix OBJ emoji.
Downloading an emoji keyboard or emoji library app can also fix the OBJ emoji