One feature that Samsung briefly showed off on stage, but that will surely be extremely popular, is the new 3D AR emojis. This is Samsung's answer to Apple's animoji, and basically lets you instantly create a bitmoji with the front-facing camera.
Here's how it works. Snap a selfie using the front-facing camera, and your Galaxy S9 instantly turns you into an AR emoji. Your head moves on the screen as yours does in real life. It smiles when you do, shows your emotions or facial expressions, and it's completely customizable.
After you snap an AR Emoji you can go into customization and add glasses, change up your hair, get new shoes, or anything else for that matter. These emojis are easy to access anywhere, can be sent in messages, and give you a whole new way to express yourself and communicate.
This is going to be popular. Expect to see them all over Twitter, Facebook, and Instagram.