How to change whatsapp friend's profile picture

(1)Open whatsapp folder in phone storage/sd card then click on profile photo folder, find a photo of a friend,which you want to change..

(2)If your friend's photo is not there,don't worry ,open whastapp then open chat of your friend and click on profile then click on profile photo, wait till load will complete.

(3)Now,go back to whatsapp folder and note the name of photo of your friend..

(4)Now delete this photo and move the photo with which you want to replace profile pic,rename it with a name which you note..

Note: In whatsapp profile photo folder, name of the all photos is the number of respective person..

Now it's done.click on profile of your friend and then click on profile photo...you can find a photo which is change by you..