Install the Mattermost iOS mobile app
Take Mattermost wherever you go by installing the Mattermost mobile app on your iOS mobile device running iOS 12.1 or later.
On your device, visit the App Store.
Search for “Mattermost” and select GET to download the app.
Enter your Apple ID Password or use Face or Touch ID to proceed with the installation. You may also be asked to provide an Apple Verification Code received through text/phone call, login notification, or Settings on your trusted device.
Open the Mattermost app and tap Sign in below the Next button.
On the next screen, tap Allow when prompted to approve notifications for the Mattermost app.
Now follow the steps below to log in:
Enter Server URL: This is the web address you go to when you want to access Mattermost.
Display Name: This is a name for your server so that you can identify it in case you have multiple servers set up in your app. Tap Connect to continue.
Enter your credentials as specified by your Mattermost system admin in the next screen. Tap Log in.