As stated above, toggle your sim card on and off. I had the same problem, tried clearing carrier services, clearing cache on messages, nothing else worked. Toggle the sim in settings and it will come back.
During beta program, the software is not yet certified by Google, and therefore Google Pay and other secure services may not work. We apologize for the inconvenience and will post a notice once it becomes certified by Google. You may try again at that time. Regards, One UI Beta Team
