You saw it before the impact. The other driver's head was down, the face lit up from below, and the car drifted across the line without ever braking. At the scene the driver told the officer they were paying attention, the phone was already in a pocket, and the report says nothing about a phone at all.
Every client asks the same question in the first meeting: can you prove he was texting? The answer is often yes, but the proof does not come from the phone in his pocket or from the police report. It comes from records held by third parties, and most of those records are on a deletion schedule that starts running the day of the crash.
Quick answer: Yes, phone records can be obtained, but not by asking the other driver's insurer for them. Carrier records are subpoenaed from the phone company. Because they are a consumer's personal records, Code of Civil Procedure section 1985.3 requires notice to the subscriber and a chance to object. For a telephone company, section 1985.3(f) adds a further requirement: the subpoena is not valid unless it includes a consent to release signed by the subscriber, as Public Utilities Code section 2891 requires. If the driver will not sign, the records may instead have to be sought from the driver through ordinary discovery, or by asking the court to resolve the refusal. That means a lawsuit generally has to be on file first. Carrier records show call and message timestamps but not the content of texts and not app or browsing activity, so vehicle infotainment downloads and event data recorders usually matter just as much. Violating the handheld ban in Vehicle Code section 23123.5 can also create a rebuttable presumption of negligence under Evidence Code section 669, if the violation caused the crash.
Where the Proof Comes From and How Fast It Vanishes
Each source answers a different question, and each one has its own clock. The table is the reason these cases have to start quickly.
- Carrier call and text logs. What it proves: Timestamps of calls and messages sent or received, and the cell sites used. How long it typically survives: Months to a couple of years, varying by carrier and record type.
- Message content held by a carrier. What it proves: The text of a message, when retained at all. How long it typically survives: Very short, often only days, and frequently not retained.
- The phone itself. What it proves: App usage, screen activity, drafts, and deleted content recoverable by forensic imaging. How long it typically survives: Until the owner deletes, resets, or replaces the device.
- Vehicle infotainment system. What it proves: Paired device, call logs, contacts, and sometimes messages synced from the phone. How long it typically survives: Until the vehicle is repaired, sold, or scrapped.
- Event data recorder. What it proves: Speed, throttle, braking, and steering input in the seconds before impact, showing whether the driver reacted at all. How long it typically survives: Until the vehicle is released from storage or the module is overwritten.
- Roadway and dashboard cameras. What it proves: The driver's posture and the absence of braking. How long it typically survives: Days on most private systems before it is overwritten.
What California Law Actually Prohibits
Two statutes govern. Vehicle Code section 23123 prohibits driving while using a wireless telephone unless it is configured for hands free listening and talking and used that way. Vehicle Code section 23123.5 is the broader one. It prohibits driving while holding and operating a handheld wireless telephone or an electronic wireless communications device.
Section 23123.5 permits use only when the device is mounted or voice operated and hands free, and it limits manual interaction to a single swipe or tap of a finger. That single swipe allowance is narrow, and it is where most arguments happen.
Note what is not required. The statute does not require proof that a message was sent. Holding and operating the device is the violation, which matters because holding a phone leaves a different evidentiary trail than sending a text.
Negligence Per Se, in Plain Words
Negligence per se is a presumption that a person was negligent because they violated a law. Evidence Code section 669 sets out four requirements: the person violated a statute or regulation, the violation proximately caused the injury, the injury resulted from an occurrence the law was designed to prevent, and the injured person was in the class of persons the law was intended to protect.
All four fit a handheld violation cleanly. The distracted driving statutes exist to prevent exactly this collision, and you as another road user are exactly who they protect.
What the presumption does is shift the work. Rather than arguing about what a reasonable driver would do, you establish the violation and the burden moves to the defense to rebut the presumption. It is a rebuttable presumption, not an automatic verdict, but it changes the shape of the trial and it changes settlement posture considerably. The same mechanism operates in other traffic violation cases described in our guide to California car accident claims.
How Carrier Records Are Actually Obtained
You cannot call a carrier and ask. Phone records belong to the subscriber, and the carrier will not release them to a stranger, an adjuster, or an opposing party without process.
The mechanism is a deposition subpoena for business records served on the carrier. Because these are personal records of a consumer, Code of Civil Procedure section 1985.3 requires the subpoenaing party to serve the consumer with a notice to consumer and a copy of the subpoena, generally at least ten days before the production date, so the consumer has a chance to object. Notice alone is not enough for phone records, though. Under section 1985.3(f), a subpoena for records of a telephone company that is a public utility is not valid unless it includes a consent to release signed by the subscriber. When a driver refuses to sign, there is no published California appellate decision that settles what a court will order. Trial courts have generally refused to order the carrier to produce records without consent, and have instead pointed to discovery requests to the driver for the same records.
Practically, that means a lawsuit must usually be filed before this evidence can be pursued, because subpoena power comes from a pending case, and obtaining the driver's signed consent, or pursuing the records through discovery from the driver, takes additional time. Waiting to file is often the reason the records are gone.
What the records show, and what they do not
Carrier logs are metadata. They show that a call or message occurred, the time to the second, the number on the other end, the direction, the duration, and often the cell site. They do not show the content of texts, and they generally do not itemize data usage, which means social media, navigation, video, and messaging over data may not appear as discrete events at all.
That gap is why a log showing no activity at the moment of impact does not clear a driver. A driver scrolling an app leaves almost no trace in a carrier's records.
The Preservation Letter Is the Whole Ball Game
A preservation letter is a written demand, sent to the driver, their insurer, and where appropriate their employer, identifying the evidence that must not be destroyed: the phone and its contents, carrier billing records, the vehicle and its modules, and any dashcam footage.
Timing decides everything. Carrier retention periods for detailed records are limited and vary, message content is retained briefly if at all, and vehicles get repaired or salvaged within weeks. A letter sent in month one preserves a case. The same letter sent in month eight documents that the evidence is already gone.
There is a benefit even then. When a party destroys evidence after being told to preserve it, the jury can be instructed that it may consider that destruction in weighing the evidence, and a defense that loses a phone after receiving a preservation demand rarely looks credible on anything else.
The Vehicle Knows More Than the Phone
Modern infotainment systems retain a surprising amount. When a phone pairs by Bluetooth, the vehicle may store the device name, call logs, contact lists, and in some models text messages, along with timestamps and sometimes location. A forensic download of the head unit is obtained through a vehicle inspection, and it does not require the driver's phone at all.
The event data recorder answers a different question. It records a few seconds of pre crash data, typically speed, throttle position, brake application, steering input, and seat belt status. A driver who never braked and never steered before hitting a stopped car in daylight was not looking at the road, and that inference lands with a jury without any phone record at all.
Both require access to the vehicle before it is repaired or sold, which is a matter of weeks. Preserving the vehicle is often more urgent than preserving the phone.
When You Probably Do Not Need to Chase Any of This
If the other driver has already been cited, liability has been accepted, and your injuries are modest, proving distraction adds very little. Fault is fault, and California does not award extra damages for a defendant being more careless than necessary in an ordinary negligence case. Spending months and expert fees to prove texting in a case the insurer has already conceded is wasted effort that you may end up paying for out of the recovery.
The proof matters when liability is disputed, when the defense claims you contributed to the crash, or when the injuries are severe enough that the difference between an accepted claim and a proven one changes the number substantially. If you are trying to decide whether a case needs that machinery at all, our discussion of whether you need a lawyer after a crash is a reasonable starting point.
What to Do in the First Week
Write down what you saw before the impact, in your own words, with the time. Contemporaneous descriptions of a driver's head being down carry weight later, and memory of that detail fades faster than people expect.
Ask the responding agency for the full report, including the officer's narrative and any statements. Photograph the scene and both vehicles before repairs. Identify every business with a camera facing the roadway and ask for the footage in writing within days, because most systems overwrite quickly. The sequence is covered step by step in our guide to what to do after a California crash.
Frequently Asked Questions
Can I get the other driver's phone records without filing a lawsuit?
Generally no. Phone companies release a subscriber's records only with the subscriber's written consent, and a civil subpoena for them must include that signed consent, which in turn requires a pending case. An insurer will not produce them voluntarily, and the driver has little reason to hand them over.
Will the records show what the text said?
Usually not. Carrier logs are metadata: time, number, direction, and duration. Message content, when it is retained at all, is retained very briefly, so text content typically has to come from a forensic examination of a device.
What if the driver was using an app rather than texting?
Carrier records may show nothing, because app activity travels as data rather than as discrete messages. That is where the phone itself, the vehicle infotainment download, and the event data recorder become the proof.
Does a citation for a handheld violation win my case?
It helps considerably but it does not end the case. Under Evidence Code section 669 the violation creates a rebuttable presumption of negligence, which the defense may attempt to rebut, and causation still has to be established.
Is hands free use legal, and does it still count as distraction?
Under Vehicle Code section 23123.5, a phone may be used if it is designed and configured for voice-operated, hands-free use and is used that way, or if it is mounted on the windshield, dashboard, or center console and the driver uses only a single swipe or tap. A driver can still be negligent while using it lawfully, but that is ordinary negligence rather than negligence per se.
How quickly do I need to act?
Within weeks, not months. Camera footage is often overwritten in days, message content in days, vehicles get repaired or salvaged within weeks, and detailed carrier records age out well before the two year filing deadline arrives.
Hit by a Distracted Driver? Geller Legal Can Help.
These cases are decided by whether someone moved early. The driver denies the phone, the report is silent, the vehicle goes to a body shop, the footage cycles out, and six months later there is nothing left to subpoena. The proof existed the entire time and expired while the claim was being handled by letter.
Geller Legal | Personal Injury Attorneys handles these cases with the detail they demand. We send preservation demands within days, file when necessary to pursue carrier records through the consent and notice the law requires, and secure infotainment and event data recorder downloads before the vehicle is repaired or sold.
We serve injured clients throughout California, with offices in Walnut Creek, Oakland, and Los Angeles. If you believe the driver who hit you was on a phone and no one has done anything about it yet, the window for proving it is measured in weeks. We also handle these claims for people struck while walking, where the same evidence decides pedestrian cases.
Contact Geller Legal for a free, confidential consultation with Attorney Michael Geller.