A phone is not a wallet. Courts have said so directly: the device in your pocket holds more about your life — where you have been, who you talk to, what you searched, what you bought, what you photographed — than a search of your entire house would have revealed a generation ago. Utah law and federal law both treat it accordingly.
The Federal Baseline: Riley v. California
In Riley v. California (2014), a unanimous Supreme Court held that police generally must obtain a warrant before searching the digital contents of a cell phone seized incident to an arrest. Officers may seize the phone and secure it. Reading what is on it is a separate act requiring separate justification.
Four years later, Carpenter v. United States (2018) extended the same instinct to records held by carriers, holding that the government generally needs a warrant to obtain historical cell-site location information tracking a person's movements.
Utah Goes Further — § 77-23c-102
Utah has its own statute, the Electronic Information Privacy Act, and it is more explicit than the case law. Utah Code § 77-23c-102 requires a warrant for law enforcement to obtain:
- The location information, stored data, or transmitted data of an electronic device; and
- Electronic information transmitted by the owner to a provider of a remote computing service, or through a provider of an electronic communication service.
The exceptions are enumerated — informed consent from the owner, a device reported stolen, voluntary provider disclosure in an emergency or under 18 U.S.C. § 2702, information already voluntarily made public, and other judicially recognized exceptions.
You Are Supposed to Be Told — Eventually
Utah Code § 77-23c-103 requires law enforcement to serve the owner of the device or information with a copy of the warrant and a written statement identifying the offense, the agency, the date the information was obtained, and any delay in notification. The default deadline is within 90 days after the information is obtained, and no more than three days after the investigation concludes.
Courts can authorize delayed notice in 30-day increments — extendable — where there is reasonable cause to believe notice would endanger someone, cause flight, lead to destruction of evidence, intimidate witnesses, or otherwise jeopardize the investigation.
If your phone data ended up in a case file and you were never served with anything, that is a fact your attorney should hear about.
Consent Is the Exception That Swallows the Rule
Here is what actually happens in most cases: nobody serves a warrant, because the phone's owner unlocked it and handed it over. Consent is a recognized exception, and once it is given the warrant analysis largely disappears.
You can decline. “I don't consent to a search of my phone” is a complete sentence, and saying it is not obstruction. Officers may still seize the device and apply for a warrant — but that changes everything about your position. A judge reviews the application, the warrant defines a scope, and your attorney can later test both.
Passcodes, Face ID, and Fingerprints
Whether a person can be compelled to unlock a device is one of the genuinely unsettled questions in this area. Courts around the country have split, and many have drawn a line between a memorized passcode — which arguably reveals the contents of your mind — and a biometric like a face or fingerprint.
The practical advice does not depend on how that question resolves: do not decide it yourself, at night, on the side of a road. Say that you want to speak with an attorney before unlocking anything. And do not unlock it “just to show them one thing.” Once a device is open, arguments about scope get much harder to win.
When the Search Was Unlawful — or Overbroad
Two distinct challenges come up in phone cases. The first is familiar: no warrant, no valid exception, so the evidence should be suppressed through a motion to suppress.
The second is subtler and increasingly important. A warrant authorizing a search for messages about a specific transaction on a specific date is not authority to read three years of photographs, browsing history, and location data. Executing a valid warrant in an overbroad way is challengeable on its own terms — and because forensic extractions copy everything, it happens more than people realize.
If any of this is happening to you, the sooner you talk to a defense attorney, the more options you have. Cardon Stuart offers a free, confidential case assessment — reviewed personally by an attorney — and we’re available 24/7. We also serve Spanish-speaking clients (se habla español). Call (801) 627-1110.