Kristin Panaro
Goldfingas
You can definitely put emojis in text fields everywhere. 🇺🇸🇬🇧
Pat
I was going to say you could use the emojis when you're in the profile field forms. 
Tapper-🇬🇧
So Just forget all I said. You can coppy and paste 🇬🇧 in to your user name field on your profile. It does not have to be a flag Emoji it can be any of the Emojis you like.