Is the text message sent by the court still used in the second trial after the trial?

No need. The conclusion of the court means the end of the trial. The short message sent by the court does not need a second trial, but only informs the defendant that the case has been closed. The court is a state organ generally established all over the world, which mainly punishes criminals through trial activities, resolves social contradictions and disputes, and safeguards fairness and justice.