Why am I missing on some emojis?

[Apoorv Tyagi]

I have an htc desire 820s.its default keyboard contains msny emojis.but when i open emojis in the keyboard,i notice that there are only few which i can see and use and the rest are like invisible and hidden and the space where they generally are is empty.please tell me why is this happening.why am i not getting all of the emojis?

 

[Rukbat]

There are no standards for emojis (yet). What you get from any particular keyboard is what you get. (All that's sent is text in the form of [emoji 42]. The app translates that into a picture.)