Phone turning to vibrate mode automatically?

[holo]

Originally Posted by drummania

I am using a Sprint PPC-6800. I have all my class schedules in my calendar. Recently I noticed that sometimes the phone will switch to vibrate mode automatically during some scheduled events, but not on all events. It will not turn back to ring mode after the event.

I wonder what option triggers this switching? I am using the stock WM calendar app and HTC Home 6 tab version.

Thanks in advance.
DM

I've never been able to get my phone to switch on it's own... If you want it to automatically switch and switch back though, check out sbsh phoneweaver, it's awesome, sets my phone to vibrate while I'm at school, silent when I'm actually in class, ring+vibrate normally, and just ring when hooked up to power....