Help Interesting discovery

[EMSandroid]

So the other day I went to lock my phone with one hand and my thumb was pressing the ringer down button at the same time I hit the power button. Once the screen went black my phone started to vibrate constantly until I unlocked my phone and turned the ringer up. Not sure if this is a bug or a hidden feature, if you catch my drift lol... It works every time I try it. any1 able to recreate that effect?

Running 2.2 stock

note: ringer was set to vibrate before locking

 

[BLOWNCO]

just tried mine i didn't go anything but lock my phone

 

[novox77]

just hold vol-down. your ringer volume bar drops to nothing and then it buzzes cause it's on vibrate mode. it will buzz as long as you keep the button held down. Not sure if I would call this "interesting"

pressing power just turns my screen off. and the buzzing stops.