MOBILE FORENSICS

Recovering deleted data on Android

The recovery of deleted data is one of the most common issues in Android forensics. Whether files, messages or database entries can be reconstructed depends on the storage technology, the encryption used and the activities that took place after the deletion.

File-Based Encryption (FBE)
Deleted SQLite records
Free memory space
TRIM
Garbage Collection
Journaling and WAL files
Logical, file system and physical extractions
Differences between manufacturers

TECHNICAL BACKGROUND

Technical Fundamentals

Deleting a file does not necessarily mean that its contents are overwritten immediately. However, modern Android devices use various security and storage mechanisms that affect the ability to recover data.

Forensic aspects:

  • •File-Based Encryption (FBE)
  • •Deleted SQLite records
  • •Free memory space
  • •TRIM
  • •Garbage Collection
  • •Journaling and WAL files
  • •Logical, file system and physical extractions
  • •Differences between manufacturers

The chances of success vary considerably between devices and Android versions.

OUR APPROACH

This is how your examination will be carried out

A transparent process – from the initial enquiry to the handover of the report.

1
Following the forensic data backup, all available artefacts are examined. In addition to existing files, SQLite databases, journal and WAL files, and other technical data sources are also analysed. The results are assessed solely on the basis of objective technical findings and are fully documented.
2
LanCologne produces expert reports for private individuals, as well as for companies and solicitors. Our reports have already been used in court proceedings. In some cases, we have been directly commissioned to produce IT forensic reports. Upon request, we can provide anonymised or redacted sample reports or extracts.

TYPICAL QUESTIONS

When is this analysis required?

  • ✔Can deleted photos or documents be recovered?
  • ✔Are deleted Messenger messages still there?
  • ✔What role does FBE play?
  • ✔How do TRIM and garbage collection affect recovery?
  • ✔How reliable is reconstructed data?

LIMITATIONS & CONCLUSION

What you should know

Data recovery is not technically possible in every case. Encryption, overwriting of free storage areas, TRIM processes or missing artefacts may result in data being lost permanently. Missing data does not, in itself, constitute evidence of a specific action.

Recovering deleted data requires a thorough technical analysis. Whether recovery is successful depends on the specific circumstances of the device in question and the available data.

CUSTOMER REVIEWS

What our customers say

4.8 out of 5 stars on Trustpilot · 54 reviews

★★★★★

“The highest standards of professionalism, prompt service and excellent communication. They made the seemingly impossible a reality. This is what genuine customer service is all about – unrivalled in Germany!”

idalein

Verified review on Trustpilot

★★★★★

“Very helpful advice, excellent responsiveness and communication. My problem was completely resolved and the lost data was recovered. I’m very satisfied and, of course, relieved!”

Layla Pankratz

Verified review on Trustpilot

★★★★★

“My problem was sorted out professionally and quickly; everyone I spoke to was always friendly, and I can still get in touch if I have any questions – I’m very grateful for that!”

a woman from Cologne

Verified review on Trustpilot

Enquire now – free initial consultation

Would you like to find out whether deleted data on an Android device can still be recovered? LanCologne can assist you with an objective IT forensic investigation and comprehensive expert documentation.

FREQUENTLY ASKED QUESTIONS

Frequently Asked Questions

Click on a question to see the answer.

Can deleted files always be recovered?
No. It depends on the storage technology and the condition of the device.
What role does TRIM play?
TRIM can prepare deleted memory areas for later reuse, thereby making recovery more difficult.
Are deleted SQLite entries relevant?
Yes. Depending on the condition of the database, they may be suitable for forensic analysis.
Does encryption affect recovery?
Yes. Modern encryption methods can significantly limit the ability to reconstruct the data.
Could an expert report be drawn up on this matter?
Yes. The results are documented in a transparent manner and assessed from a technical perspective.