Vehicle Code (VC) §23123
Prohibits all drivers from using a handheld wireless telephone while operating a motor vehicle.
Vehicle Code (VC) §23124
Motorists 18 and over may use a hands-free device. Drivers under the age of 18 may NOT use a wireless telephone or hands-free device while operating a motor vehicle .
Vehicle Code (VC) §23123.5
Writing, sending, or reading a text-based communication while driving will be against the law for all drivers in California.