Why does my iphone w/ ios7 vibrates randomly when unlocked?
I have iphone 4 with the new ios 7 installed. This never happened before installing ios7. Whenever I unlock the phone, using my passcode, sometimes (50%) it vibrates. I didn't get a new email, no new notification, no notification I havnt checked, no new messages. it vibrates with ringer on or on silent. I looked every setting and there is no setting that I can turn on or off vibration when unlocking. Any thoughts? Thanks.
iPhone 4, iOS 7