Can I complain to the Ministry of Industry and Information Technology if the SMS function is locked for the second time?

It's no use complaining. The SMS function is locked for two reasons. First of all, you send too many short messages and operate frequently. The operator defaults to spam messages, and then turn off your short message function. Operators require no more than 200 articles per hour and no more than 1300 articles per day. If it exceeds this standard, it will default to spam messages. Therefore, it is not recommended to send a large number of short messages directly by mobile phone. The second is the information you sent, which was complained by others as spam or other harassing information. The operator will also turn off your SMS function. If it is enabled here, you can call the customer service hotline 10086. If you want to send a large number of short messages, it is recommended to use onesmser short message platform.