Is it illegal to make sex phone calls?

Is it illegal to make obscene phone calls? This behavior is illegal.

When you encounter obscene phone calls, you should first report them and do not get involved. Otherwise, if the other party is caught and traces the phone information, you may be implicated, even if you are not directly involved. So it is best to stay away from pornographic information and live a healthy life. If you encounter bad information or phone calls, you can go to the 12321 Network Bad Information and Spam Reporting and Acceptance Center to report it. Scope of acceptance: spam text messages, fraudulent calls, harassing calls, spam emails, bad apps and websites, personal information leakage and other types of bad network and spam messages.