I'm having a bit of problem, and was wondering if anyone has experienced the same? When I receive a new mail notification, there is no sound or vibration. This is the case when the phone is locked and with a blank screen and a new mail notification pops up as well as when the phone is unlocked and on. The "silent mode" switch is not engaged, and I hear sounds and vibration for everything else including calls and SMS notifications. The sound setting for new mail is set to on.