I received a replacement Note 20 Ultra after breaking my screen. Now when I try to use Samsung Messages RCS is says "Registration Failed". Does anyone have a fix for this? I've tried waiting a few days but says the same thing. Cleared cache, Ect. with no fix. Thanks in advance!
You have to call your Cellular provider and talk with a live agent. They will switch over the service from your old phone to your new phone. They will need your ESN along with other phone information.
So I don't have a actual fix but I stopped checking the RCS setting daily and left it idle a few days. After about a week it started working again on its own. Thanks everyone that chimed in to help.