Here it is! The People v. Spriggs Opinion that was recently decided and certified for publication that driver's could not be cited for using their cell phone while driving if they were using their GPS function.
The Fifth District Court of Appeal concluded that the Legislature never intended the law to cover looking at a cellphone map, reversing Mr. Spriggs' conviction. While this ruling may seem limited at first glance, it can be used as persuasive authority when cited for an alleged violation of Vehicle Code Sec. 23123(a).