said by haroldo:
My iPhone 4 (up to date) will typically flash new emails on the lock screen and then vibrate (I keep sound off) about a minute later. I know this isn't a big deal, but it's frustrating, since I typically assume the vibration is a new item, so I pick up the iPhone and re-check.
Is this normal behavior?
Not to sound cliche, have you tried turning it off and on again? Perhaps it just needs a reboot?