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How to join multiple slack teams on iphone or ipad
Open slack on your iphone or ipad.
The slack app looks like an " s " in a colored square icon on your home screen.
If you're not automatically logged in, tap the sign in button at the bottom, and sign in to the workspace you want to message.
Tap the icon on the top-left. This button will open your navigation menu on the left-hand side of your screen.