What does it mean to change the mobile phone terminal?

This means that if you really want to use a 5g network, you must use terminal equipment that can provide 5g signal reception or transmission. Generally speaking, such as mobile phones, that is to say, you can switch to a 5g mobile phone to open a 5g package, and then you can really use the 5g network. If you directly use the 5g network, but there is no 5g network receiving terminal, you can't really enjoy the 5g service.