FontAwesome/Unicode not showing in Mobile?

Site: https://createit22.com

Hello! For some reason, the little right-angled arrow doesn't show in mobile. It seems to be a unicode issue, I think, though Google didn't help me resolve it.

Here's the code that gave it to me:

p.main-title:before {
	content: '\1F892';
	position: absolute;
	
	  font-family: FontAwesome;
	top: 67px;
	right: -15px;
	color: #000;
	margin-top: 15px;
	font-size: 35px;
}

And here are the images showing it on anything but mobile, and on mobile:

Any ideas? Thanks!