Mobile Device Forensics

Mobile evidence experience

Veronica Perez is a Senior Computer Forensic Specialist whose experience includes mobile-device acquisition, location evidence and litigation support. She has provided mobile forensic instruction for the California Department of Justice Advanced Training Center and Teel Technologies.

Meet our forensic experts and request a CV

How remote collection works for your client

1. Plan the collection with counsel. Tell us the phone type, relevant apps, dates, case questions and deadline. We confirm authorized access and define the collection scope.
2. Your client receives a collection link. We provide instructions and guide your client through setup on a compatible computer.
3. Your client connects the phone. They plug it into the computer and complete the access prompts with our guidance, keeping it connected as instructed.
4. We collect and preserve the evidence. Our team collects the available data within scope, verifies the results and prepares the evidence for the agreed next step.

Your client keeps possession of the phone throughout this remote workflow. Counsel can focus on the case while our forensic team guides the collection.

Convenient for your client. Lower collection costs.

Your client can normally keep using their phone during remote collection. They keep it connected as instructed, with our team guiding setup. There is no need to ship the phone or travel to hand it over for this remote workflow.

Collection can take anywhere from a few minutes to overnight, depending on the data and setup. Starting before bed can fit collection around your client’s work and family schedule. We provide a timing estimate and coordinate the schedule for analysis and reporting with counsel.

Remote collection helps reduce costs by avoiding device shipping, travel and the coordination involved in an in-person handoff. A scope agreed with counsel keeps collection and review focused on the evidence the case needs. Ask us about the collection approach and cost for your matter.

Discuss your case needs and your client’s phone

Tell us the evidence you need, your client’s phone and apps, and your deadline. We will help plan a convenient remote collection and discuss scope, timing and collection costs.

Get a free consultation Call 1-800-868-8189

Which messages, chats and other data can you collect?

We collect SMS, MMS, iMessage and supported chat-app data, including material from WhatsApp, Signal, Instagram and Facebook Messenger. Relevant attachments, participants and dates help place a conversation in context. The collection can also include available photos, videos, contacts, call history and files.

We match the method to your client’s device and apps. Tell us which conversations or records matter, and we can plan a targeted collection or a broader examination. Authorized account records, backups and linked devices can provide additional sources for the evidence you need.

Need deleted messages? Discuss a deeper extraction.

If deleted messages or deeper app records are important, we can assess a full forensic extraction and relevant backups. A deeper extraction accesses additional areas of a supported device and may involve examination of the physical phone. Recovery depends on the device and the data that remains available.

We also look for relevant copies in older backups, linked devices and authorized account sources. Both remote collection and deeper extraction use documented forensic procedures; we select the approach that fits your matter.

Speak with us before resetting the phone, reinstalling apps or restoring a backup. We can help you preserve the best available evidence and explain the collection and recovery options.

Discuss your case needs and your client’s phone

Tell us the evidence you need, your client’s phone and apps, and your deadline. We will help plan a convenient remote collection and discuss scope, timing and collection costs.

Get a free consultation Call 1-800-868-8189

Backups and location evidence add context

A phone backup can preserve earlier messages, files and other useful records. We examine its date, source and contents and compare them with the device and other available evidence. Collecting backups separately helps preserve the history needed to understand a conversation or event.

Device and app records, photographs and account information can provide location evidence. We assess timestamps and precision, compare sources and build a timeline that explains the supported activity. Our analysis connects the technical records to the questions counsel and clients need answered.

Mobile evidence accepted in court

GDF’s mobile-device evidence has been accepted in court. We use forensically sound procedures, verify and authenticate extracted data, and maintain a documented chain of custody.

From collection through reporting, we record the source, method and handling of the evidence. Our experts prepare clear findings, supporting records and exhibits so counsel can present the evidence and explain how it was obtained.

Qualified experts who can explain the findings

Yes, GDF can provide expert testimony. Our qualified experts can prepare and sign reports and affidavits, be deposed and testify about their examinations and opinions. We explain the collection method and what the evidence establishes in language the audience can understand.

We can prepare conversation exhibits, searchable material and timelines suited to the engagement. When discovery production is required, we coordinate the format and scope with counsel. Meet our forensic experts and learn about expert witness and neutral examination services.

The screenshot is where the question starts

A screenshot of a text message shows what one person chose to capture. It may omit other participants, earlier messages and the records needed to establish whether an attachment was original or forwarded. It does not supply the device or backup records behind the same conversation. Mobile device forensics at GDF treats the phone as a technical record. We preserve the evidence, then read the conversation in context rather than as a set of isolated images.

Our guided remote collection lets a client keep their phone while the collection happens, which matters for the executive who cannot be without it for a week. Once the data is preserved, the analysis follows the matter: which conversation, which period, which participants and which corroborating sources explain the event in dispute.

The collection method decides what you can say

SMS, chat applications, local backups and linked devices do not store the same information, and one collection method will capture some categories well and miss others. Device model, operating system version, the application version and the access conditions all change what comes out.

We document the source and method for every collection and state which categories were available. An empty result is no proof that a conversation never happened. Retention settings, deletion, synchronization behavior or a collection limit can all produce the same blank. When the missing message is the point of the dispute, that distinction is the case.

Where appropriate, we compare the device against its backups, authorized account records, linked devices such as a tablet or laptop, or another participant's preserved copy. An independent copy can complete a broken thread or settle a disputed attachment, provided its own date and origin are documented as carefully as the phone's.

Reading timestamps and attachments for what they are

A single message can carry a sent time, a received time, a server event time and the device's local display time, and applications render them differently. We sort out which is which before placing anything in a sequence, because a chronology built on the wrong timestamp is confidently wrong by exactly the offset.

Attachments need the same care. A thumbnail, a forwarded image and the original media file differ in resolution and metadata, and in what they can establish. A photo saved on a phone was not necessarily taken by that phone. GDF checks the relevant records before drawing any conclusion about who created a file or where.

Location evidence is where careless work does the most damage. A coordinate can come from a photograph's metadata, an application event, a stored map search or a check-in, and each has a different precision and meaning. We explain what the record represents and how it compares with the rest of the evidence. We do not place a person at a street address from one unexplained data point, and we will say so if someone else has.

Reviewing only what the matter needs

A phone holds years of personal life that has nothing to do with the case. We work with counsel to define the technical scope, the relevant periods and the review process, and where the source and the requirements allow, we use targeted collection or filtering to keep the rest out of the record.

Output can include conversation exhibits, searchable records and a timeline in which each entry links to its source. GDF's mobile evidence has been accepted in court, and our qualified experts provide reports and testimony when retained. Past acceptance guarantees nothing about the next matter. Careful collection and a clear explanation of the method are what carry the evidence each time.

Preserve the phone evidence with GDF

Preserve the phone evidence with GDF before messages, backups or app records change. Tell us the device type, the relevant apps, the date range, the access status and your deadline. We can plan mobile device forensics collection, analysis, conversation exhibits and expert support around the needs of your matter. Your initial consultation is free.

Preserve the phone evidence with GDF

Related services and resources: computer forensics, email Microsoft 365 forensics, computer forensics expert witness.