a lot of dev have a miss concept about Unicode/utf8 including me but I believe my understanding get Better and this my last version.
For a project i was developing a rest api for mobile app
when an ios dev asked me
"I send you Unicode string but it appears as ????? in admin web panel "
OMG!!!😨😨😨
Unicode is not an encoding nor an algorithm. it's a standerd which just map a glyph to a codepiont .
but utf8 is the encoding of Unicode and how it's stored or transferred ,
the string you send must be a utf-8 encoded string as the rest of the json you sent .