Whenever I add a calendar event on my iPhone or iPad, it will only show up on the other iOS device after I open the calendar app. This has been a big problem because my calendar alarms won't go off on my phone if I haven't opened the app in order to sync the new events. Aren't they supposed to automatically show up on each device without having to open the calendar app first? Does anyone know what's wrong? I've also tried restoring as new on all my devices. Any help is appreciated. Thanks in advance.