Just seeing the difference in emoji presentations is revelatory in itself. But then it gets even more interesting. GroupLens researchers asked subjects to rate 22 anthropomorphic emoji from five platforms by sentiment, using a scale that ranged from strongly negative (-5) to strongly positive (5). And here’s where you start to see where “grinning face with smiling eyes” goes so very wrong. Apple’s average sentiment ranking was almost -1, while Microsoft, Samsung, LG, and Google all were 3 or above.
Source: That Emoji Does Not Mean What You Think It Means
My wife (and almost all of my close friends that I’d use emoji with) is an iOS user and I’m an Android user… that’s led to a few miscommunications before we realized that the emoji we were sending “cross-platform” didn’t carry the same intended meaning.
Perhaps that’s one of the beautiful aspects of emoji and symbolic language additions… the meanings are left to the receiver to first decrypt and then to import meaning into based on their own background, experiences, culture (and operating system).