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Mobile Forensics Expert Vetting Checklist

Nineteen questions to put to a mobile-forensics expert before you retain one — covering qualifications, methodology, validation, testimony record, and engagement terms. Nothing you enter leaves your browser.

Work through the questions as you would in a screening call. Answers are saved in this browser only, so you can return to a partly finished checklist. Mark Unsure freely — an unsure answer is a question to ask, not a mark against the expert.

Qualifications

Has the examiner been qualified to testify as an expert on mobile-device evidence by a court, and can they identify the matters?

Do their credentials cover the specific platform at issue (iOS, Android, or both) rather than digital forensics generally?

Do they hold current, verifiable tool certifications for the tools they intend to use?

Can they distinguish clearly between what they examined personally and what a technician performed?

Methodology and tools

Can they state which extraction type they would use — logical, file system, or physical — and why it fits this device?

Do they record tool name, tool version, and device state as a matter of routine?

Can they explain what their tools do NOT reach on this device and this OS version?

Do they treat parsed tool output as a starting point rather than as the finding itself?

Validation and limits

Can another examiner reproduce their result from the documentation they produce?

Do they verify integrity — hashing where applicable — and say so in the report?

Do they state the limits of their conclusions in writing, rather than only under cross-examination?

Do they distinguish device-local data from cloud-synced data when attributing an artifact to a person?

Testimony record

Will they provide a testimony list, and does it survive a check against the dockets?

Has any court excluded or limited their testimony, and can they explain the circumstances?

Have they testified for both retaining and opposing sides, rather than only one?

Is their published work consistent with the opinion they would offer here?

Engagement and conflicts

Was a conflict check completed before any privileged material was discussed?

Is the engagement scoped in writing, including what happens if the evidence does not support your theory?

Is it clear whether they are being retained as consulting or testifying, and do they understand the difference in discoverability?

How to use these answers

A checklist does not decide whether an expert is admissible. Whether a given opinion is admitted under Daubert and Rule 702 is a legal determination reserved to the court, made on the specific record before it. What this tool does is narrow the conversation: it surfaces the handful of questions where the answer was No or Unsure, so those get asked before an engagement letter is signed rather than at a deposition.

The questions that most often matter are the unglamorous ones. Whether the examiner can say which extraction type they used and why. Whether another examiner could reproduce the result from the documentation. Whether the report states its own limits, rather than leaving them to be drawn out on cross-examination. An expert who answers those comfortably is usually the one whose opinion survives contact with an opposing expert.

For the longer treatment, see How to Vet a Mobile Forensics Expert Before You Hire, or the litigation resources page for a preservation-letter template.

This checklist is general information for attorneys and is not legal advice. It does not evaluate any specific expert, matter, or record, and it does not create an attorney-client, expert, or consulting relationship. Whether an expert's opinion is admitted is a ruling for the court.