I just activated a new phone number in the Note 20 Ultra and had no issues. I am currently on WiFi. I was able to call my other phone (Note 10) from the N20 with no issues. Then I tried calling the Ultra from my regular phone and the call goes through, and I can see it on the screen of the Ultra, but there’s no ringtone. When I check the various volume levels in settings, it’s turned all the way down. I have adjusted it 4 times, trying the call again after each, and the volume goes all the way back down to zero again.
I can ask Samsung tech support about this as it seems like a phone issue, rather than a Republic issue, but I’d love feedback if anyone has any.
I will be heading out in a little while to place cellular calls. I will repeat the above tests, as well as place other outside calls. I will report back in a few hours.