California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 8 — Of the Trial and Judgment in Civil Actions, Chapter 4 — Trial by Jury, Article 2 — Conduct of the Trial, Section 611

If the jury are permitted to separate, either during the trial or after the case is submitted to them, they shall be admonished by the court that it is their duty not to conduct research, disseminate information, or converse with, or permit themselves to be addressed by, any other person on any subject of the trial, and that it is their duty not to form or express an opinion thereon until the case is finally submitted to them. The court shall clearly explain, as part of the admonishment, that the prohibition on research, dissemination of information, and conversation applies to all forms of electronic and wireless communication.