Cell Phone Ticket in California: CVC 23123 and 23123.5 Explained

California has three separate Vehicle Code sections governing wireless device use while driving. Together they form one of the most frequently enforced categories of traffic law in the state. Here is how each section works and what drivers should understand about the citation process.

What the Law Says

CVC 23123 prohibits operating a motor vehicle while using a handheld wireless telephone. The statute's core requirement is handheld use — the driver must be holding the device while the vehicle is in motion. A phone mounted on the dashboard and operated by voice commands is generally not the conduct addressed by CVC 23123.

CVC 23123.5 extends the prohibition beyond voice calls to cover reading, writing, or sending any written electronic communication while driving — including text messages, emails, and messaging applications. Like CVC 23123, the statute applies to handheld use.

CVC 23124 governs drivers under 18. The standard for minor drivers is stricter: no wireless device use while driving, including hands-free configurations. The only statutory exception is an emergency call to law enforcement, fire, or medical services.

Fines and DMV Points in 2026

A first offense under CVC 23123 or 23123.5 carries a $20 base fine (approximately $162 total with penalty assessments) and one DMV point. A second or subsequent offense within 36 months carries a $50 base fine (approximately $285 total) and one DMV point. The same fine structure applies to minor drivers cited under CVC 23124.

The one-point DMV consequence for adult drivers became effective January 1, 2021, under Senate Bill 400. Before that date, CVC 23123 and 23123.5 did not add DMV points. The estimated totals reflect the base fine multiplied through California's mandatory penalty assessment structure; amounts can vary by county.

Legal Exemptions

Several uses are explicitly exempt from CVC 23123 and 23123.5:

• Hands-free use: Using the phone through a speakerphone, Bluetooth, or voice-activation system in a manner that does not require holding the device. A phone in a dashboard mount, operated by voice, is the clearest example of permitted use.
• Emergency calls: Using a handheld device to contact law enforcement, fire departments, medical providers, or other emergency services is permitted when the call is reasonably necessary.
• Stopped vehicle: The prohibition applies to a vehicle in motion. A vehicle that is lawfully parked and out of the flow of traffic may not be subject to the statute, depending on the specific circumstances. A vehicle stopped at a red light is generally considered to be operating for purposes of this statute.
• Utility vehicles: Certain exemptions apply to utility employees operating utility service vehicles in the course of their duties.

How the Contest Process Works Through TBWD

Citations under CVC 23123 and 23123.5 are infractions and are eligible for Trial by Written Declaration under CVC 40902. Through the TBWD process, the driver submits a written account of events to the court without appearing in person. The citing officer must also submit a written declaration describing the basis for the citation — the specific observations that led to the stop and the citation.

The court reviews both declarations and determines whether the violation was established by the evidence. If the officer does not submit a declaration within the required time, the court has no officer testimony before it. In that circumstance, the citation is dismissed.

Common factual issues that arise in cell phone TBWD cases include: whether the driver was holding the device or whether it was in a mount or resting on a surface; whether a hands-free function was active; whether the officer had an unobstructed line of sight to observe the alleged conduct; and whether the call, if any, was made under emergency circumstances.

TBWD carries no risk of a worse outcome than paying the fine. If the citation is not dismissed through TBWD, a Trial de Novo — an in-person hearing — can be requested.

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Special Rules for Minor Drivers — CVC 23124

CVC 23124 applies exclusively to drivers under 18. Unlike the adult standard, which permits hands-free use, CVC 23124 prohibits any wireless device use while driving — including phone calls made through a mounted, voice-controlled device. The emergency exception applies: a minor driver may use a device to contact emergency services when reasonably necessary.

For provisional license holders, a conviction under CVC 23124 adds one DMV point in the same way as the adult provisions. Under California's Graduated Driver License program, multiple moving violations within 12 months can trigger additional restrictions on the provisional license. Drivers under 18 and their parents may benefit from consulting a licensed attorney about how a specific conviction could interact with the Graduated Driver License rules.