You can add chat box to your mobile app using the Chat page link. You can find it in the Settings > Channels > Chat page or after clicking on your profile picture here. Bind this URL as a target of a clickable element in your app (the most common way is a button). There are two ways how you can implement the behavior when user clicks the element:
- their default browser will be opened with the chat box page (user leaves your app but can use it while chatting with you),
- the in-app browser will be opened with the chat box page (user stays in your app but is unable to use it in another way than is chatting with you until they close the chat).
Consult the methods with your mobile application developer who will implement the behavior. If you want to allow your mobile app users to contact you directly from the app via chat, refer the developers of your application to this page and consult both implementation options.