Why can't the other party receive the short message from the mobile phone?

1. According to the information you provided, if you send a message to the other party, the other party will not receive it. It is not excluded that it is caused by the following circumstances:

1 SMS sending failed, so I suggest you try sending it again or changing the machine for testing;

2. The other party's mobile phone is blocked;

The other party's number is in an abnormal state, such as arrears, downtime, SMS blacklist, etc.

2. If this is not the case, it is suggested that you can contact Unicom's manual customer service for verification. The actual situation is subject to local policies.