Mobile evidence guidance
Can an independent expert review a police phone extraction?
Yes, where the extraction, reader files, reports or underlying forensic material are lawfully supplied. The review can assess scope, methodology, completeness, interpretation and whether conclusions exceed the available evidence.
Potential evidence sources
Where relevant records may exist.
- Forensic extraction and reader files
- Police schedules and reports
- Acquisition logs and tool versions
- Device details and chain of custody
- Relevant screenshots or exhibits
- Defence or prosecution instructions
Decision factors
What materially changes the prospects.
- 01Whether the full extraction is available
- 02Acquisition type and supported data
- 03Relevant date range and applications
- 04How exhibits were selected
- 05Whether alternative interpretations were considered
Evidential limitations
What must not be overstated.
A review cannot recreate data omitted from the supplied extraction
Tool-generated labels require validation
Legal admissibility is for counsel and the court
Sources and interpretation
Each entry identifies its limited supporting proposition and documentation-check date. General methodology is not a current device-support list. These checks are not laboratory validation; availability and method suitability require assessment for the exact source and configuration.
- NIST mobile device forensics guidance
Methodological background (2014), not a current device-support list.
General methodology · Documentation checked
- NIST IR 8354: Digital Investigation Techniques, final scientific foundation review (2022)
Methodological background: discovery is not exhaustive and changing software can change artefact meaning. Not a device-support list.
General methodology · Documentation checked
- SWGDE 18-Q-001-2.1: Minimum Requirements for Testing Tools Used in Digital and Multimedia Forensics, version 2.1, 7 March 2024
Testing guidance, not certification or endorsement of the practice.
General methodology · Documentation checked
Confidential case review
