Will the sued court send a text message to inform you?

I won't. If sued by the court, the court will not notify the defendant by phone or text message. It is illegal to notify the defendant by phone or SMS, and the court will not serve the summons by illegal service.

Legal basis:

Article 125 of the Civil Procedure Law of People's Republic of China (PRC), the people's court shall send a copy of the indictment to the defendant within five days from the date of filing the case, and the defendant shall submit a reply within fifteen days from the date of receipt.