Is it true that SMS informs law enforcement at home?

If it's just a text message, it may be suspected of fraud. You can go to the court or call the court to ask.

Legal basis: Article 261 of the Supreme People's Court's Interpretation on the Application of the Civil Procedure Law of People's Republic of China (PRC) stipulates that when a case is tried by summary procedure, the people's court may summon both parties, notify witnesses and serve litigation documents other than the judgment documents by simple means such as message, telephone, short message, fax and email.