Sporadic bell sound at exactly 12:00 noon
I'm not sure if anyone else has experienced this, but I find it odd since both my phone and my girlfriends phone do the same thing. At exactly 12 noon everyday (with very rare occasions when it doesn't happen) the notification sound will play over and over in quick succession for around 5 seconds or so, then nothing. I've checked and no notifications ar coming through, no alarms are set, and even when on silent the phone will vibra in the same manor.
Can anyone shed any light on this? Thanks
iPhone 5s, iOS 9.3.3