Why is there a charge for checking traffic by SMS, and there is no excess, and the excess SMS is sent one day later?

If you find that there is surplus traffic, but the traffic fee is still deducted, please check whether the usage range of surplus traffic is in line with your current usage. There is surplus traffic in the province, which cannot be used outside the province, and the night traffic can only be used within the specified time. If the above situation is ruled out, if you have any questions, you can contact Unicom customer service for your understanding.

There are several reasons for using mobile phones to generate traffic but not receiving traffic SMS reminders:

1. Your mobile phone has been turned off or stopped for more than the time limit for sending SMS (i.e. 24 hours);

2. The SMS storage space is full;

3. Due to the influence of network and rush hour, there may be some time delay or information loss when sending SMS.

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