Please follow below mentioned step to make a conference call:
> Kindly dial a call from the dialler. When first call get answer then tap on add call & dial a another call from the dialler. When that call get answer then tap on merge option to make a conference call. Follow the same procedure to add more calls.
> For further assistance, register your concern in the Samsung members app (Open Samsung members app>click on “+“icon>send feedback>Error report/ Ask Questions).
Team Samsung Members