If your device is rooted then you can now change your system emojis using Emoji Switch.

If you have problems and can't use the app for some reason then don't hesitate to contact me at: [email protected]

Want to switch to your old emojis?
No problem. You can now restore your old emojis using EmojiSwitch.

Want to get Phone 8 or Phone X emojis on your current device?
Just use Emoji Switch in order to install OS 12 emojis even from Phone Xs!

EmojiSwitch is basically an emoji changer and has many downloadable emoji packs.
In order to use the Emoji Switcher you need to have root. Otherwise EmojiSwitch will be unable to change your currently installed emojis.

A few of the emoji packs you can change to are listed here:
EmojiOne AOSP Emojis Phone X Emojis and more!

This emoji switcher also includes the latest OS 12 emojis but there are also older OS 11 emojis in the switcher.