As stated, new s10 does not have the iWnn IME option, which is needed to send emoji. I can receive tho. I switched from Samsung default keyboard to gboard, but still no go. Samsung wants me to download an app that everyone hates because the last update disabled this long time popular feature. Emojis may seem a small issue, but its part of the high-dollar smart phone experience. You’re going to hear from other Samsung users about this soon if you haven’t already.
Thanks and Peace to you!