title: Converting emoji from hex code to unicode
body: <p>I want to use emojis in my iOS and Android app. I checked the list of emojis <a href="http://unicode.org/emoji/charts/full-emoji-list.html" rel="nofollow noreferrer">here</a> and it lists out the hex code for the emojis. When I try to use the hex code such as <code>U+1F600</code> directly, I don't see the emoji within the app. I found one other way of representing emoji which looks like <code>\uD83D\uDE00</code>. When using this notation, the emoji is seen within the app without any extra code. I think this is a Unicode string for the emoji. I think this is more of a general question that specific to emojis. How can I convert an emoji hex code to the Unicode string as shown above. I didn't find any list where the Unicode for the emojis is listed.</p>