Grinning Face With Big Eyes emoji is a smiley, showing 🦷 Teeth, which looks happy, pleasantly surprised, and excited. In the case of Samsung, it features raised eyebrows, and this makes it look even more exciting; on the other hand, in Apple’s version it is almost indistinguishable from 😀 Grinning Face emoji — the only difference is that the 👀 Eyes of the first one are open wider. As for the meaning, most often, it is used precisely in the context of excitement and adoring something — and it is pretty rare in the meaning of laughter and having 😄 Fun. (Source: Emojis.wiki, Fair use)