What if Unicom's mobile phone number can't receive SMS?

Take Chongqing Unicom as an example: there are the following reasons for not receiving SMS:

1. Please check whether the mailbox is full first. If it is full, please delete some information.

2. If it is still not received after deletion, you can change the machine or card to see if it is a hardware factor;

3. After eliminating the above reasons, you can try to test whether it can be received in other places to see if it is the reason for the weak local signal.

Tips: If the above problems do not exist, you can contact the local Unicom manual customer service for consultation and handling.