Why is there no SMS prompt for the remaining traffic?

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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