One of my earlier bits of tinkering when I was younger was jailbreaking my iPhone and finding the code in the Japanese iPhone OS build that enabled emojis and using it to enable emojis on my American iPhone. If I recall correctly, I was then able to send them to other iPhones, but of course no one could reciprocate. I thought I was pretty cool! Most people didn’t really understand their point, and it wasn’t until they were added to the American build where people warmed up to them.