Answering Calls via Headset Button on Android
Unfortunately it is not possible to accept calls in the Teams app from a Teams device on Android but it works with the same Teams-App Version on IOS.
Calls can only be accepted via the buttons of the headset on IOS Device.
We tryed it with the Plantronics Voyager 5200 UC MS Version.
You should also be able to answer the calls on Android.