Hi guys, lets try this on your iphones, i've tried it on mine and on a friend's 3G. First, make sure you have your iphone ringer on and setup to sound when you lock/unlock it. Now go to the call app (don't know how is it called, the green one with the telephone) go to the numeric keypad, now lock your phone and unlock it. When you unlock it, it will sound really low. Now go to the Voice Notes app, when you unlock it the same will happen, but when you lock it, it won't even sound. Does it happen to you guys?