Why isn't my Samsung fold3 co-branded system?

System bug problem. According to the information about Samsung fold3 joint name, my Samsung fold3 joint name system is not due to system bugs. Galaxy Z Fold3 5G is a dual card dual standby folding screen smartphone. Two SIM cards are inserted into a mobile phone at the same time, which can be switched according to different networks, so that you can work efficiently, have fun at ease, and achieve a double harvest for your family and career.