At first, the unicode emojis were only black and white. With the gradually develop of these emojis, some of them became emojis with colors. However, some fonts can support the display of complete emoji, but some fonts do not. So, these emojis have many forms on different platforms. Here we divide them into 3 types according to the emoji qualified status:

  • Fully-qualified Emoji -- Every emoji character is qualified, or an emoji sequence in which each emoji character is qualified.
  • Minimally-qualified Emoji -- The first character is qualified, the remaining character sequence is not fully qualified.
  • Unqualified Emoji -- An emoji is neither fully qualified nor minimally qualified.

Note💡: The adaptability of fully qualified emoji is the best. Even if some fonts are removed, it can display the complete emoji. This means that it can be supported by most fonts.