Thank you for your post. Most 3rd party apps are not working at full functionality during beta. We would suggest reaching out to the 3rd party developers for issues regarding those apps. We appreciate your contribution to the beta program.
One UI Beta Team
WiFi calling is not a 3rd party app, it's a function baked into the firmware by Samsung in conjunction with AT&T.
the more people that stress how Unlocked phones we buy directly from Samsung at a minimum need the same features as the carrier versions they did it with Visual Voice mail. now Please do it with wifi calling!! and I agree, we dont need Robot Responses, Samsung, it makes you look bad, Stop it!!