Cellebrite’s 2026 Industry Trends Report found that 97% of investigators now identify smartphones as their primary source of digital evidence. The report surveyed 1,200 practitioners in 63 countries. Two years ago that figure was 73%. If you’re an attorney who hasn’t had to grapple with cell phone evidence yet, I’d encourage you to treat that as borrowed time rather than a permanent condition.

I’ve been a digital forensics examiner for close to twenty years, and the trajectory is unmistakable. Early in my career, a cell phone showing up as evidence was unusual. Now I can’t recall the last case I worked where a smartphone wasn’t central to the facts. Criminal defense, prosecution, family law, employment disputes, personal injury, commercial litigation, insurance claims. It doesn’t matter the practice area. The phone is where the evidence lives, and the attorneys who understand that have a meaningful advantage over those who don’t.

What Lives On The Phone And Nowhere Else

Here’s the part that trips up even experienced litigators. Many attorneys assume that cell phone evidence can be obtained through provider subpoenas or account-level discovery requests. And for certain categories of data, that’s true. Carriers can provide call detail records, and platform providers can sometimes produce account data in response to legal process. But a significant and growing share of the evidence that matters most in litigation exists only on the physical device itself.

Think about what’s stored locally on a smartphone. Data from encrypted messaging applications often can’t be obtained from the provider at all, because end-to-end encryption means the provider may not have access to the content. Deleted text messages, photographs, and browsing history may still be recoverable from the device’s storage even if they were never synced to a cloud backup. Location data generated by the operating system and by individual applications can be far more granular than anything a carrier’s cell-site records will reflect. Draft messages that were never sent. Notes. Voice memos. Health and fitness data that can potentially establish whether someone was walking, driving, or stationary at a particular time. Search history that can speak to intent or state of mind.

None of that is likely to be produced in response to a subpoena from a wireless carrier. None of it will typically show up in a standard document production request. In many cases, it exists only on the phone, and if the phone isn’t preserved and examined properly, that evidence may be gone permanently.

I’ve worked cases where a device was wiped or traded in before anyone thought to issue a preservation letter, and evidence that could have been dispositive simply ceased to exist.

The Supreme Court recognized the depth of this data in Riley v. California, holding that phones contain “the privacies of life” and require a warrant to search. Carpenter v. United States extended that reasoning to historical cell-site location information, recognizing the precision with which phone data can reconstruct a person’s movements. Both decisions reflect what forensic examiners have been demonstrating in proceedings for years: the evidentiary weight of a single cell phone can exceed everything else in a case combined.

The Numbers Make The Direction Clear

This isn’t an American phenomenon. The European Commission has estimated that electronic evidence is relevant in roughly 85% of criminal investigations across EU member states, a finding significant enough to drive the adoption of new e-evidence regulations that let judicial authorities request digital data directly across borders.

The FBI’s 2024 Internet Crime Report documented $16.6 billion in losses from over 859,000 complaints, a 33% increase year over year, with nearly every complaint category generating evidence that passes through a mobile device.

On the civil side, Cellebrite’s private sector findings show mobile data appearing in 66% of corporate investigations. The Cellebrite report also found that 95% of investigators agree digital evidence significantly increases case solvability. But solvability depends on the evidence actually being available when you need it. And that depends on preservation, timely acquisition and competent examination.

The Time To Get Ready Is Now

The same report found that 94% of practitioners say complexity is straining caseloads, more than half of devices arrive locked, and two-thirds of agencies still move evidence around on USB drives. NIST’s guidelines on mobile device forensics require that acquisition methods and limitations be documented for admissibility, and chain of custody has to hold up under scrutiny. The point is that handling cell phone evidence properly isn’t something you can improvise at the last minute. It requires planning, relationships, and at least a baseline understanding of the process.

For attorneys, that means a few concrete things:

Identify qualified forensic examiners before you need them, not after you’re already in discovery. The good ones stay busy.
Train your team on preservation. A litigation hold letter that doesn’t address cell phones is incomplete in 2026. Your paralegals and associates should understand how to properly preserve a mobile device as soon as it becomes potentially relevant, because improper handling can result in lost data, spoliation issues, or evidence that an opposing expert can challenge on procedural grounds. The window between when a phone becomes relevant and when its data begins to change or disappear can be remarkably short.
Understand the difference between what you can get from a provider and what may only exist on the device. That distinction will shape your discovery strategy, your preservation obligations, and your ability to challenge or authenticate the other side’s evidence.

Ninety-seven percent means cell phone evidence is no longer a specialty concern. It’s a baseline competency for anyone involved in legal proceedings. The attorneys and firms that invest in understanding this evidence now, building the relationships, training the staff, learning what the technology can and can’t show, will be the ones who are ready when it shows up in their cases. And based on the numbers, it’s going to show up soon.

Lars Daniel

Cell Phone Evidence In 97% Of Cases