Smiley Symbols are character or mark used for representating an object, function, or process, e.
So you don't have to worry about the compatibility.
On Snapchat, this emoji next to a contact denotes that you have best friends in common with this person.
You can directly copy the symbol by clicking on the symbol you want.
Design Postcards, Quotes, Flyers, And Business Cards.
It has the same process as Whatsapp Sharing.