Why did you issue a court summons on Guangdong Litigation Service Network without SMS notification?

There will be no SMS notification. SMS cannot confirm whether the court information was delivered effectively. The people's court has a formal service procedure for serving subpoenas. The first way to serve a summons is for the parties to sign in person, but telephone notification is not the way to serve. You should serve them directly in court. The legal requirement is to notify the parties by summons three days before the trial.