Thank you for your feedback. This has been a commonly reported issue. Please first check with your carrier first to resolve the connectivity issues. If issues persist, please send us an error report to help us debug the issue. We apologize for the inconvenience and appreciate your contribution to the beta program.
One UI Beta Team.
update 2: Updated phone to most recent beta. Still an ongoing issue. Haven't gotten any word from Moderators about anything. 😕