We all do things we don’t mean to. Similarly you might also accidentally delete your favorite files on your android device and might want to get em back. Fortunately we can get back your deleted files on just like you can recover deleted files on windows. For this purpose you have to download a simple app called Undelete app if your android device is Rooted and if it’s non rooted devices you need to connect your android to pc and use other data recovery like recuva or aidfile. To root your android read How to Root your Android quick and easy.
After you install and run undelete on your device, it quickly scans all files that have been deleted and gives you an list. You can check the files you want and click restore. There you go, you got your file back