Because not all Android phones can be supported by Android Data Recovery without root. So you need to make sure your phone has been rooted before you start the recovery process.
If you are ready, let's use the SD card recovery for Android.
Step 1 Keep your files on SD card not being overwritten
When you delete the files, they will be marked as invisible and unusable. But if you write the new data on it, the deleted files will be overwritten and erased forever. You should not modify anything before you finish to get the deleted files back.
Step 2 Enable USB debugging and connect your device to the computer
Install and run the software on your computer and connect your Android phone to your computer, too.
After the device is connected, check the version of your Android phone. Follow the suitable way below to enable USB debugging.
1. Android 2.3 or earlier: Enter "Settings < Applications < Development < USB debugging".
2. Android 3.0 to 4.1: Enter "Settings < Developer option < USB debugging".
3. For Android 4.2 or the newer: Enter "Settings < About Phone < Build number" for several times and when you get the note: "You are under developer mode", you can go back to "Settings < Developer options < USB debugging".
Step 3 Analyze your Android SD card and scan the files in it
Once you enable USB debugging, you can click the "Start" button. And the Android data recovery will analyze your phone and the SD card on your phone.
When you see the window below. You can choose the type of the files witch you want to recover. Also, you can choose the scanning mode. From here, we strongly recommend the standard mode because of the speed is faster than the advanced mode.
After the scanning, you will find your device pop up a window with the following picture. Click "allow" to continue. And then click "start" to scan your deleted files in your Android SD card.
Step 4 Check the scanning result and recover the deleted files from Android SD card
After the scan done, you can see the result window pops up. Just find your deleted files what you need. And then put the check marks on the files which you want to recover. Click "recover" button and get your deleted files back.
If the data on your SD card disappear, whatever the reason is, why don't you try this SD card data recovery to retrieve your deleted files?