The mobile phone can receive short messages from contacts, but it can't receive express delivery.

According to the information you provided, if you send and receive SMS normally, you can't receive SMS from courier service. It is not excluded that your mobile phone is blocked from receiving value-added service short messages, that is, express service short messages may be sent through cornet ports or virtual service numbers of network platforms, and the system will automatically block them. It is recommended that you change the machine for testing or contact your native Unicom manual customer service to assist in verification and handling. The specific situation is subject to local policies.