How to complain about China Unicom spam text messages?

For spam text messages sent by SP, you can forward the received information to "106559999 + the other party's number" (it is free to send this text message). For other spam text messages, you can forward the received illegal text messages to 10639110 + the other party's number, report it to the Provincial Public Security Department, and the Provincial Public Security Department will handle it uniformly (post-paid users send text messages for free, and prepaid package users need to pay a communication fee of 0.1 yuan for text messages) /strip).