iPhone 5 running iOS 6.1. Settings for Reminders app: no alert/banners, no icon badging. "On" in notification center. I've noticed that despite having reminders set with a date and time, they do not reliably appear in the drag-down notification center. For example, I have four reminders for tomorrow at times ranging from late morning to 5pm. Earlier, at 5pm today, none of them appeared in the notification center. Closing the notifications app and reopening didn't help. Hard closing and reopening the app didn't help. Locking / unlocking the phone didn't help. As soon as I turned the phone off and on, all four reminders appeared as expected in the notification center. Anyone have any suggestions on how I can address this besides restoring the phone in iTunes?