Hi NatashaGoode,
You may try the other options below. Hope that one of the solutions will solve the issue.
- Check also the apps permission on your phone like camera, microphone and also nearby devices.
Go to Settings -> Apps -> Teams -> Permissions -> Allow access to "Nearby devices"
- Try to connect with your bluetooth device first before you open the Teams.
Please let me know if this doesn't work or if you need further assistance.
Thank you.