Hi could somebody please help me with my phone. I have a Samsung Galaxy S21 Ultra 5G, on a pay monthly plan and today all of a sudden I'm getting an emergency calls only heading on the top of my screen. It's showing between 0 and 2 bars but not showing 3G/4G or 5G. When I try to call it says "not registered on network" I've tried resetting, network resetting, airplane mode on and off and none of these have worked. I've taken my SIM out and put it in my partners phone and can call out fine but with her SIM in mine it has the same issues so believe it may be the device itself. Can anybody suggest a way to help please
