What Happens After the FBI Seizes Your Phone and Laptop Under a Search Warrant?

When federal agents seize a phone or laptop under a search warrant, the search itself is usually only the beginning of a much longer investigative process.

The FBI may take the physical devices, preserve the data, create forensic copies and examine information that investigators believe could be evidence of a crime. The process can take weeks or months, particularly when investigators are dealing with large amounts of digital information.

That is why the seizure of electronic devices does not automatically mean that someone has been arrested, charged or found guilty of a crime.

The recent seizure of former Rep. Eric Swalwell’s phone and laptop at San Francisco International Airport illustrates how significant—and complicated—a federal digital search can become. Federal investigators obtained a warrant and seized his devices as part of an ongoing investigation, but the public record does not establish that criminal charges will necessarily follow.

So what actually happens after the FBI takes someone’s phone or computer?

First, Agents Execute the Search Warrant

A federal search warrant authorizes investigators to search for and seize specified property when the legal requirements for the warrant are satisfied.

Under Federal Rule of Criminal Procedure 41, warrants can authorize the seizure of evidence of a crime, contraband, proceeds or property connected to criminal activity. The warrant is also supposed to identify the place to be searched and the property or evidence investigators are authorized to seek.

In a case involving electronic devices, investigators may seize the physical phone, computer, storage device or other equipment described in the warrant.

The warrant does not necessarily mean agents are permitted to examine every piece of information on the device for any reason. The scope of the search depends on the warrant and applicable law.

The FBI Creates a Record of What Was Taken

After property is seized, federal rules require investigators to provide a copy of the warrant and a receipt or inventory identifying the property taken, subject to specific procedural circumstances.

This inventory becomes important because it establishes what investigators physically took during the search.

In the Swalwell case, the reported warrant inventory identified an Apple iPhone, its charging equipment and an Apple MacBook Pro among the seized property.

That documentation does not reveal what investigators ultimately find on the devices. It simply establishes what was taken.

The Devices May Be Examined Forensically

A phone or laptop can contain enormous amounts of information.

Investigators may be interested in emails, text messages, photographs, documents, browser history, application data, communications and other digital evidence, depending on what the warrant authorizes and what investigators are legally permitted to examine.

The Department of Justice has published guidance describing procedures surrounding searches and seizures involving computers and electronic evidence.

Digital evidence can also require specialized forensic work. Investigators may preserve data in a manner designed to prevent the original information from being altered while they conduct their examination.

This is one reason a person may not immediately get a seized device back.

Seizing a Phone Is Not the Same as Searching Its Contents

One of the most important distinctions in digital investigations is between taking a device and examining the information stored on it.

The Supreme Court addressed this issue in Riley v. California, holding that police generally need a warrant before searching digital information on a cellphone seized from an individual during an arrest, subject to recognized exceptions.

That decision reflects the enormous amount of personal information that modern smartphones can contain.

A phone can hold years of communications, photographs, location information, financial records and other highly personal material. As a result, courts have treated digital searches differently from many traditional physical searches.

In a federal investigation involving a specific search warrant, investigators must operate within the authority granted by that warrant and applicable legal rules.

What Investigators Are Looking For

The answer depends entirely on the investigation.

A warrant may identify categories of evidence investigators believe could be found on a device.

For example, investigators could potentially seek communications, records or files connected to a particular alleged offense.

The fact that a device contains unrelated personal information does not automatically make all of that information evidence.

Digital searches can therefore involve complicated questions about the scope of the warrant, the handling of unrelated information and whether investigators exceeded the authority granted by a court.

What If Investigators Find Something Important?

If investigators discover information they believe is evidence of a crime, that information can become part of the broader investigation.

Prosecutors may then review the evidence and determine whether additional investigative steps are necessary.

That could include interviewing witnesses, obtaining additional warrants, reviewing financial or communications records, or seeking other evidence.

A device seizure therefore does not necessarily represent the final stage of an investigation. It can instead provide investigators with information that leads to additional investigative activity.

Does a Search Warrant Mean Someone Will Be Charged?

No.

A search warrant generally means a judge has authorized a search based on the legal requirements applicable to the warrant. It does not constitute a criminal conviction, and the existence of a search does not by itself establish that the person whose property was searched committed a crime.

This distinction is particularly important in high-profile investigations.

In Swalwell’s case, the seizure of his devices is a documented investigative action. But the public record does not establish that he will ultimately face federal criminal charges.

The FBI and Justice Department have not publicly announced charges connected to the investigation.

How Long Can the FBI Keep a Phone or Laptop?

There is no universal number of days that applies to every federal investigation.

Electronic devices can remain in government custody while investigators conduct forensic examinations or while the evidence remains relevant to an investigation or potential prosecution.

The Justice Department has procedures concerning the eventual return or disposal of seized evidence once continued retention is no longer necessary for official purposes.

The length of time can therefore depend on the complexity of the investigation, the volume of digital evidence and whether the device remains necessary as evidence.

Can Someone Ask for Their Property Back?

Yes, federal law provides a procedure for seeking the return of property in appropriate circumstances.

Federal Rule of Criminal Procedure 41 allows a person aggrieved by an unlawful search and seizure to move for the return of property. The rule also provides procedures concerning the filing and handling of such motions.

However, whether property should be returned can depend on the circumstances.

If investigators still legitimately need the material as evidence, obtaining immediate return may be difficult. A court can also become involved in disputes concerning the legality or scope of a search.

What Happens If the Search Was Improper?

A defendant or property owner may challenge a search or seizure in court in appropriate circumstances.

One possible issue is whether investigators had sufficient legal grounds for the warrant.

Another is whether agents stayed within the warrant’s authorized scope.

Courts can consider challenges involving the legality of searches and seizures, and in some circumstances defendants may seek suppression of evidence obtained through an unlawful search.

The exact remedy depends on the facts and the applicable law.

Why Digital Searches Can Take So Long

Searching a physical room is relatively straightforward compared with searching a modern smartphone or computer.

A single device can contain thousands or millions of individual files, messages and other pieces of information.

Investigators may need to identify relevant material, preserve evidence and separate potentially responsive information from unrelated personal data.

Federal guidance specifically addresses the unique issues involved in searching and seizing computers and electronic evidence.

That complexity helps explain why a person can have a device seized during an investigation and receive no immediate indication of what investigators found.

What Happens If No Charges Are Filed?

An investigation can end without criminal charges.

If prosecutors ultimately determine that the evidence does not support charges, or that additional prosecution is not appropriate, the investigation could conclude without an indictment or criminal case.

Property may eventually be returned when the government no longer has a legitimate need to retain it, subject to applicable procedures. The Justice Department’s evidence-disposal policy describes returning seized personal property once continued retention and official use are no longer necessary.

The absence of charges, however, does not necessarily mean that investigators found nothing. It simply means the government did not proceed with a criminal prosecution.

What the Swalwell Case Could Reveal Next

The investigation involving Eric Swalwell remains an example of why a device seizure should not automatically be interpreted as proof of criminal wrongdoing.

Federal agents reportedly seized his iPhone and MacBook Pro at SFO and later searched his Washington residence. Court records indicate that investigators are examining possible violations of federal law, but important details about the government’s evidence and theory remain unavailable publicly.

The next significant development could come through a court filing, an unsealed warrant document, a charging decision or a statement from federal prosecutors.

Until then, the seizure of a phone or laptop tells the public that investigators believe the devices may contain evidence relevant to an investigation—but it does not by itself establish guilt.

For anyone following the Swalwell investigation, the key question is no longer simply why the FBI took the devices. It is what investigators are legally permitted to examine, what evidence they find and whether prosecutors ultimately believe that evidence is sufficient to support charges.

This article provides general information about the federal search-and-seizure process and is not legal advice. Individual cases can differ significantly depending on the warrant, jurisdiction and facts.