The SMS received from Mobile shows that it has been stopped.

I bought every mobile phone, and shit can surf the internet. It is generally easy to surf the internet inadvertently. If you really don't need this function, you can call 10086 to turn off the internet access function. Your mobile phone may have been surfing the Internet without being found or turned off. The function of automatic network shutdown is that the traffic exceeds 15G or the amount exceeds 500 yuan. If it's really not the cost of your mobile phone, you can pay the arrears first and then complain. Now there is a double refund for mobile phones.