## [Configuration](🔗)
Learn how to initialize the Chat iOS SDK with or without options. See [Installation, Quick Start](🔗) to learn how to configure chat during installation.
## [Open the Chat UI](🔗)
Learn all the ways for how to open the chat UI.
## [Authentication](🔗)
Learn how to authenticate chat with a JWT token to securely identify customer logins and logouts. Authentication is optional.
## [Localization](🔗)
Learn how to localize chat.
## [Customize Colors](🔗)
Learn how to customize colors for the chat widget.
## [Push Certificates and Keys](🔗)
Learn how to create push keys and push certificates to enable push notifications for chat.
## [Push Notifications](🔗)
Learn how to configure push notifications after you [enable push notifications for chat](🔗).
## [Use the SDK with Objective-C](🔗)
Learn how to use the Kustomer Chat UI API in an Objective-C project.
API references for Kustomer Chat
Visit the [Chat UI API reference](🔗) to learn how to work with the Chat SDK.
Visit [Build your own UI](🔗) to learn how to work with the Kustomer Core SDK to build your own chat UI.