Why can't someone receive the text message after Yuhang transit?

Maybe the base station can't find the mobile phone number, or the operator base station is too far away.

An operator refers to a provider that provides network services. Huawei, ZTE, Nokia, Ericsson and other communication equipment manufacturers are called manufacturers, while China Mobile, China Unicom, China Telecom and China Radio and Television are called operators.

Because the country is very strict in telecommunications management, only companies with operating licenses issued by the Ministry of Industry and Information Technology can set up networks. From the perspective of communication industry, equipment manufacturers and operators are interdependent, but operators generally have more advantages, just as China Mobile stipulates that some mobile phones produced by Nokia and other mobile phone manufacturers should be branded with GSM.