Well, you need to connect your phone to computer and apply to professional recovery app.
If you get data back on Mac, then [Android Data Recovery Mac][1] is you perfect choice.
[1]: http://www. ...
... ://www.card-data-recovery.com/recover-photos-videos-from-nokia.html
... can use recovery software to recover data from the phone memory ... ://www.card-data-recovery.com/recover-photos-videos-from-nokia.html
... but if you have your file stored on an external card ... and file types. If the content is found you can recover it ...
