To see all the channels in a team, select See all channels beneath your shown channels in a selected team.
You can also go to the team name, select More options
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Choose channels to display in Microsoft Teams
Tap Teams
Tap Teams
To see all the channels in a team, select See all channels beneath your shown channels in a selected team.
You can also go to the team name, select More options
Choose channels to display in Microsoft Teams
Tap Teams
Tap Teams