Why didn't 10086 send a message to my mobile phone before my traffic ran out?

Borrowing Lai Bird VS Daren: There are several possibilities:

1. The mobile phone is equipped with software for blocking 10086 short messages;

2. Virus;

3. The traffic warning function is not enabled;

4. When you just exceeded the traffic, the short message could not be sent to your mobile phone in time for various reasons, such as busy;

5. SMS reminders have a lag period, which is not real-time every minute.

6。 You set up a traffic reminder.

etc ......