The iPhone clock app has an oddity not many people know about
There is a limit to how far your alarm settings will scroll, and most people never reach it.
The iPhone Clock app has been around for many years, and for most, it has always been a straightforward default app. However, a small curiosity hiding within the alarm settings went viral, along with other quirks. To put it simply, the alarm hour and minute scrolls seem infinite at first glance, but rapidly scrolling through the hours and minutes will eventually reach a dead end at 4:39. For those with a preference for military time, it ends at 16:39.
Open the Clock app, select Alarms, tap the plus button and start scrolling through the hours and minutes until you reach the end. It takes several swipes, which is why most people never noticed it in the first place. However, this little endpoint does not mean you are limited in setting actual active alarms.
Why does the iPhone alarm stop at 4:39? The specific hour and minute seem a little strange and random. Apple has not officially weighed in on this, though online discussions offer various theories involving software interface elements. For the most part, it is best treated as an interesting idiosyncrasy.
The icon tells time
There is another detail that is easier to spot once you know where to look. The Clock app icon is not static and actually displays the current time, complete with a moving second hand. Apple introduced this feature in iOS 7.
Normally, the second hand moves in a continuous sweeping motion. On newer devices, however, Low Power Mode changes the motion to a once-per-second tick, resembling a traditional quartz clock. It still tells the time with a less fluid animation, and this is purely a visual change without audible ticking.
If you are looking for one more hidden option, open the Stopwatch inside the iPhone Clock app and swipe across the display. You can switch between digital and analog stopwatch faces without installing a third-party app.
How do I change the appearance of the clock app on my iPhone?
If you want to alter the app's appearance or use your phone as a bedside display, iOS offers a few built-in clock options.
If you want a large bedside alarm clock, connect your iPhone to a charger and stand it up horizontally. This activates StandBy mode, which displays widgets, photos, or a traditional clock face. You can cycle through different clock styles by swiping left or right.
You can also enable Night Mode so StandBy adapts to low-light bedroom environments. The screen displays a heavy red tint to minimize disruption in the dark.
To keep the clock visible continuously, ensure Always-On Display is active in your settings. Devices without an Always-On Display require a tap or a query to Siri to wake the screen.
