how to disable unlock screen sound on galaxy S3 Lately my phone makes an annoying sound when unlocking the screen. I don't have "Screen unlock sound" checked in the setting. I googled and found few people complained about this issue but no solution has been found yet. I tried checking and unchecking the setting and restarting the phone many times but still no joy. A hard reset might help but i don't want to do that if not absolutely essential. 

This is not me but just found on youtube and this guy seems to have exactly same issue.

http://www.youtube.com/watch?v=T3m2Dyv-jaY

Anyone here had same issue and found a solution?
One of the comments with 9 Likes in the video says: Settings &gt; More settings &gt; Under file/data﻿ transfer, turn off NFC