[mmbawlz]

My phone is usually on vibrate, so whenever I get a text message or someone calls, the phone will start making a really annoying screeching sound instead of vibrating. It does this a lot, I don't know why. And no, it's not the sound when you're near a speaker or whatever. What's causing this? The phone is pretty new, so I don't know. :S

I decided to record it to help you guys out. Here's a link:

zSHARE - annoying vibration sound.wma

EDIT: It doesn't ALWAYS do this, sometimes it does it a lot, sometimes a little.