Share your experience!
Hey all,
This is very trivial but it's bugging me. Whenever I unlock my xperia z by sliding down it now makes this sound - it wasn't doing it yesterday and I can't make it go away. It does not happen on silent or vibrate. Nothing in the sound settings appears to work, even 'screen lock sound', which I thought would be the closest thing to it. i've turned off all apps from settings > apps, so I don't see how it's one of those.
settings > sound > screen lock sound
Don't forget to about the Kudos
It's acting quite strange. That box in unchecked and it's still making that irritating 'bloop' noise whenever I swipe down to unlock. Screen lock sound is definitely unchecked.
I've remembered that it isued to make a 'click' I think, when it unlocks. The noise is now three, deep, swift bloops. Unchecking the box does not get rid of it.
Maybe the media sound is on high? try putting that 1 down and see if it goes quiet 
that's quite odd, do you have any intrussive apps or a different home launcher or lockscreen app?
found the problem, my wife had the exact issue and i just fixed it. She had a wallet style folding cover and kept her credit card and licence in it. The chip on the visa card was making the phone make the noise. Removed the credit card from the cover and problem fixed. hope this helps many others.
James