When two SIM cards are inserted at the same time, only the default data card supports 5G services, and the non-default data card supports 4G/3G/2G services.
1.5G services need to be supported according to the deployment of operator networks and related services. Please consult the network operator to open the 5G service.
2. If two SIM cards are inserted into the mobile phone at the same time, enter Settings >; > SIM card management, and set card 1 or card 2 as the default data card.
3. go to settings > mobile network > mobile data, and in the network setting area of the default data card, turn on the enable 5G switch.
In some network environments and geographical locations, the 5G function may not be available due to the interference of the carrier's network frequency band.