Why can't I get the short message from Unicom card?

Unicom number if you can't receive SMS for the following reasons:

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

2. If you still can't get it after deleting it, 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.

If you still can't solve the problem after trying the above operations, please contact the local manual customer service for consultation.