Apple's adding animated avatars to the iPhone you can send in iMessage - here's how you'll create Memoji

Apple unveiled Memoji at its WWDC conference on Monday.

Memoji will be one of the new features in iOS 12, the next version of the operating system powering the iPhone, which is due out later this year.

Memoji are a new type of Animoji.

Apple launched Animoji, or animated emoji, last year with the iPhone X. The icons mimic users' facial expressions and head movements and can be sent to other users via iMessage. But because they rely on the three-dimensional cameras of the iPhone X, Animoji can only be used on that device.

On Monday, Apple announced new animoji, including a ghost and a koala.

But Memoji are based on human faces — and can be personalized.

Users will be able to customize their Memoji so they resemble what they look like in real life — or just in their minds.

You'll be able to create Memoji in Messages.

To set a Memoji, you'll need to tap on the "app" icon in Messages, to the left of the text entry area. You'll then tap on the Animoji icon.

You'll see animoji icons at the bottom of the screen. You'll then swipe to the left until you see a plus sign. You'll tap on it to get started.

Your Memoji will start with a basic face.

The feature will suggest a skin and eye color, both of which you can fine tune. You can then add freckles — a little or a lot — if you'd like.

But you'll be able to customize your hair color and style — with lots of options.

You'll be able to personalize your Memoji in different ways. You'll be able to give your avatar one of numerous hairstyles, choose the appropriate color for your hair, and add facial hair and different types of head coverings. You can also give your avatar eyewear, and choose just the right tint for your sunglasses.

Once you're done customizing your Memoji, you'll be able to save it so that you can pull it up at any time from the Animoji menu.

You'll be able to use your Memoji to replace your face when taking photos in Messages.

iPhone users will be able to customize the photos and videos they take in Messages with new features and effects. Among them will be the ability to replace their faces with their Memoji.

You'll also be able to use Memoji in FaceTime.

FaceTime — Apple's video calling app — will now allow you to have a group call with up to 32 people at the same time. While chatting with your friends, you'll be able to swap out your Memoji for your face.

Here's Tim Cook talking on FaceTime via his personal avatar.