I'm glad you were able to get the malfunctioning device exchanged, Allicat39. That new volume description is a bit odd though. As LENNYEDGE mentioned, it is sometimes easy to bump the side and feel a vibration when the volume lowers too far. Have you noticed any pattern as to when the notifications go off on its own and vibrates? Do you also see a notification in the top notification bar of your phone around the same time?
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