iPhone Clock alarm picker stops scrolling at 4:39

The iPhone Clock app’s alarm time picker appears to scroll endlessly, but it eventually stops at 4:39, or 16:39 for users who choose 24-hour time.

The endpoint is a curiosity and does not mean users are limited to setting alarms only up to that time.

Apple has not explained why the picker stops at those numbers, and online explanations differ.

The Clock app icon also shows the current time, including a moving second hand.

On devices running iOS 26.1 or later, Low Power Mode changes that hand’s animation from a smooth sweep to one tick per second, without making a ticking sound.

In the app’s Stopwatch, users can swipe to switch between digital and analog displays.

The iPhone can also show a clock in StandBy mode when it is connected to a charger and placed on its side.