Otherwise, they might be late for work Monday morning.
A glitch in the iPhone's operating system will cause recurring weekday alarms not to ring on time on Monday morning because of the end of daylight-saving time. The phone's alarm does not recognize the time change and will ring an hour late if users don't go into the program and manually reset the alarms.
Apple says users who depend on the iPhone to wake them up should create one-time alarms, specifically for Monday morning.
