The billing process prompts that SMS verification failed.

If you buy Unicom prepaid cards through the online business hall, you can't receive the verification code in your mobile phone mailbox. The reasons why you can't receive SMS or verification code are as follows:

1. First, check whether the mailbox or mailbox is full. If yes, 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 you can receive it in other places to see if it is the reason for the weak local signal.

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

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