How to open Huimin Express SMS?

call the mobile phone operator. When the short message of Huimin Express is launched, you need to call the mobile phone operator. The operator refers to the provider who provides network services. The manufacturers of communication equipment such as Huawei, ZTE, Nokia and Ericsson are called manufacturers, while the companies such as China Unicom, China Telecom, China Mobile and China Radio and Television are called operators.