What if China Telecom's traffic exceeds the limit and there is no SMS reminder?

Maybe it's too late to answer you now. I suggest you read The People of China. Article 34 of China Telecom Regulations stipulates that operators should inform consumers of the huge expenses incurred this month as soon as possible and deal with them. Failure to do so in time is in violation of article 40. Consumers can complain to the relevant departments, namely the Ministry of Industry and Information Technology (because typing is a bit slow). If you encounter such a thing, you should look at the relevant laws and regulations. Keep the general recall and SMS screenshots and tell the customer service that I am not wrong. I don't accept this solution. ) I hope it will help everyone who sees the answer, provided that I am not wrong.