The point is, although emoji as known now come with rich selection of emoticons, same didn't apply to earlier Japanese emoji sets.
"Emoji present on the Sharp PI-4000 (1994)" from the article shows 20+ animals(12 from Chinese calendar), 9 relatives(grandpa, baby, so on), 3 types of alcohol(beer, sake, cocktail), and two smileys, one happy and one angry, out of 160 symbols. That's quite unlike typical non-Japanese emoticon sets before iOS emoji.
Granted, the Sharp pocket computer emoji wouldn't have been designed for chat, so there would have been less need for emoticons - but if you look at the list of emoji implemented in phones from NTT doCoMo and J-PHONE had back then linked in the article, there are just 5 each, neither even having a single circular smiley.
"Emoji present on the Sharp PI-4000 (1994)" from the article shows 20+ animals(12 from Chinese calendar), 9 relatives(grandpa, baby, so on), 3 types of alcohol(beer, sake, cocktail), and two smileys, one happy and one angry, out of 160 symbols. That's quite unlike typical non-Japanese emoticon sets before iOS emoji.
Granted, the Sharp pocket computer emoji wouldn't have been designed for chat, so there would have been less need for emoticons - but if you look at the list of emoji implemented in phones from NTT doCoMo and J-PHONE had back then linked in the article, there are just 5 each, neither even having a single circular smiley.