I have never received the verification code. Other software can be received, and even letters can't be received directly. Why?

If Unicom users can't receive SMS or verification code, there are the following reasons:

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.

If the above problem does not exist, please contact the local manual customer service to handle this problem.