If you scroll through your Android phone’s File Manager, you will most likely encounter the lost.dir folder. And when you open it, there are a bunch of unknown files.

Some people think that it is an unnecessary folder. But it actually contains some important data that you may need. If you want to know the importance of the lost.dir folder, stay on this page.

Recover Files Deleted From The Recycle Bin After Empty Poster

Part 1: What Is Lost.Dir?

Not a lot of people know the purpose of the lost.dir folder found in an Android phone. Well, upon thorough research, we found out that it actually plays a vital role on our devices.

What Is Lost.Dir

The lost.dir works the same as the Recycle Bin on computers. It collects all the corrupted data that are created when an error occurs on your phone such as:

  • Application Malfunction
  • Phone System Error
  • Battery Failure
  • Improper Removal of SD Card
  • OS Update Errors

When your phone shuts down due to these errors, all the data from apps and features that are wiped out, corrupted, or deleted will automatically be stored on the lost.dir folder. For example, if you notice that a certain file was corrupted after an error, it will most likely be stored on the lost.dir folder.

Deleting the lost.dir folder is not a big deal if you have no intention of recovering or fixing the affected data or they are not relevant to you. But if you wish to restore them, you will need a lost.dir recovery.

Part 2: Recover Lost.Dir Files on Android Phone SD Card

Recovering lost.dir may sound impossible, but there is a known trick to restore those files. Check out the full tutorial below.

Step 1

On your Android, open the File Manager > Phone Storage or SD card > lost.dir folder. From there you will find a bunch of files with undetectable extensions.

Step 2

Select one file and rename it. Then change the extension to any format and try to open the file.

Rename Lost.Dir Files

You may try these extensions:

  • Image formats: jpg, png, gif, bmp
  • Video formats: avi, mp4, 3gp, wmv, flv
  • Audio formats: mp3, wav, cda

Step 3

If the file didn’t open, you may try out the other formats.

While this method is easy, it is not reliable. First, you have to deal with finding the right file and we know all the files on the lost.dir folder has unknown file names. This process alone could take hours. Next, you need to figure out the right format. If you’re not knowledgeable about data types and formats, this could be very hard.

However, we did find one tool that can easily extract and recover lost.dir files from your SD card. See the next part!

All-in-One Data Recovery

Recover deleted, corrupted, or lost data from any device

√ Supports Video, Audio, Document, Image, Email, Archive

√ Covers USB drives, hard drive, Android & Camera SD Card

√ Compatible with NTFS, FAT16, FAT32, exFAT, EXT

Part 3: Restore Lost.Dir Files Using 4DDiG Data Rescue

4DDiG is one of the most trusted data recovery tools in the market today. It can easily retrieve any type of data from SD cards and other types of storage devices.

This tool will dig deep into your SD card and safely recover all the deleted files. And when we say all, we mean everything.

4DDiG Main Interface

4DDiG supports all data types such as images, documents, videos, audio, app data, and more. It also works well with all data formats like JPEG, DOCS, MP3, MP3, and more! You can restore any data you want! How amazing is that?

Plus, this tool has a “no data loss guarantee”, which means that all the details/information within the file will stay intact during and after the restoration process. This means that you don’t have to deal with corrupted files!

All-in-One Data Recovery

Recover deleted, corrupted, or lost data from any device

√ Supports Video, Audio, Document, Image, Email, Archive

√ Covers USB drives, hard drive, Android & Camera SD Card

√ Compatible with NTFS, FAT16, FAT32, exFAT, EXT

Speaking of corrupted files, 4DDiG also has a feature that can repair all types of damaged and corrupted data. You can restore your file to its former glory and use it again. Wow!

And if you think that 4DDiG is difficult to use, well you’re wrong. This program has an accessible interface that helps users easily locate all the features. You can literally recover your files within a couple of minutes.

Get this tool now!

Steps to Recover Lost.Dir Files via 4DDiG

Keep in mind that 4DDiG can only recover lost.dir files that are stored on your SD card. To proceed with this process, prepare an SD card reader then follow the steps below.

Step 1

First, hit the button below to download and install 4DDiG on a working PC then launch it.

Step 2

Grab your Android phone and remove the SD card. Insert the SD card into the SD card reader then connect it to your computer.

Step 3

On the 4DDiG interface, click the SD card, and on the pop-out window select Others. After that click the Scan Selected File Types button.

4DDiG Select Files

Step 4

After the scan, hit the search bar and type in lost.dir. Once you see the results, select them and hit Recover. When it’s done, exit the program and check the files.


After trying out the two methods mentioned on this page, we highly recommend using 4DDiG to recover lost.dir files. It’s easy to use, effective, and safe. Hit the download now!

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