These directions are for iOS/Apple devices but the general idea is the same for Android.
Step 1: Launch the Teams app from your home screen of you can search for it by doing the middle of the screen swipe down and typing in “teams”

Step 2: Click “Sign in”

Step 3: Enter your work email address and click “Sign in”

Step 4: Click “Allow” to the popup

Step 5: Click “Ok”

Step 6: Click Next

Step 7: Click “Got it”

Step 8: You are now signed in
