Asa Wrote: Some seem to already work. But you'd have to have some sort of conversion for different devices. Not all iphone emojis are viewable on android, and vise versa. Might want to check out twemoji(Emoji support library by twitter.) It converts unicode into the respective emoji automatically. If that's what you need.
I actually thought they use the same, hm. I've always used iOS, so I didn't know this. I'll look into it.