Hide a file in lumia 520&525

hiii friends today i tell u how you can hide a file in our lumia mobiles

procedure:

1.first you should have file managers like FILES app

2.open the FILES app and select your particular file and long press on that file a dialogue box appears as RENAME

3.select RENAME and change to .mp4 to .apk

4.press OK

5.then go to your videos and see that there is no file

6.if you want to revert back then you should again open FILES app open that particular file and long press on that a dialogue box appears as RENAME

7.change .apk to .mp4


                                              THAT'S IT