www.ots.ca.gov
“Using your cell phone while driving is not only dangerous, but also illegal. In California, you cannot use a cell phone or similar electronic communication device while holding it in your hand. You can only use it in a hands-free manner, such as speaker phone or voice commands, but never while holding it. Any driver under the age of 18 is prohibited from using a cell phone for any reason.
Because engaging in distracting behaviors with a phone like dialing, talking, or texting is so dangerous (it increases the risk of getting into a crash by three times), The California Office of Traffic Safety started the “Put Your Phone Down. Just Drive” public awareness and education campaign.”
Perhaps talking or FaceTiming with the boyfriend while driving and in a fury, upset, etc.
JMO