Are you  tried of people looking at your photos,videos etc in your phone. well this is how to hide the a file from others to see it.
There is an app called file hider that usually does the hiding of files in your phones so easily for you.
the app is 3.61mb. you can get the app from goggle play store,app stores. etc.
when you download the app,install the app and open it.
   the steps to follow
1.open the app.
2.when you open the you will see two fields:viz
enter new password: enter any password you wish here
repeat new password  re-enter the word you entered in the first dialog box  here.
after you have done it successfully.
it will lead you to all the files in your phone.
just click on anyone and it will bring out 3 options which are hide open delete
just click on hide anDthe file will be hidden