● Covered by 1 source · 1 reportLow impact1 neutral
iPhone Clock App Alarm Scroll Limits at 4:39; Icon Displays Live Time
Key points
- iPhone Clock app alarm scroll stops at 4:39 (16:39 military time).
- The Clock app icon shows the live current time with a moving second hand.
- Low Power Mode on iOS 26.1+ changes the second hand to a ticking motion.
Alarm Scroll Limit Discovered
The iPhone Clock app, a standard feature since the original iPhone, contains a previously unnoticed scroll limit within its alarm settings. Users rapidly scrolling through the hour and minute selectors will find the interface stops at 4:39, or 16:39 in military time. This limit does not restrict alarm setting capabilities but is an interface quirk.
Unexplained Limitation
Apple has not provided an official explanation for the 4:39 scroll limit. Online discussions suggest various theories, including a potential connection to a component called Tableview. The specific numbers do not align with common timekeeping conventions, making the reason for this endpoint unclear.
Live Time Display on App Icon
Another detail of the Clock app is its dynamic icon, which displays the current time, including a moving second hand. This feature was implemented with iOS 7. This means the app icon itself functions as a small clock face, eliminating the need to open the app to check the time.
Low Power Mode Visual Change
On devices running iOS 26.1 and later, the Clock app icon's second hand animation changes when Low Power Mode is active. Instead of a continuous sweeping motion, the second hand moves in a once-per-second tick, mimicking a traditional quartz clock. This is a visual-only change and does not involve audible ticking.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
The iPhone Clock app's alarm setting interface has a scroll limit at 4:39, a detail that went viral in mid-2025. Additionally, the Clock app icon displays the current time with a moving second hand, a feature introduced in iOS 7, and changes to a ticking motion in Low Power Mode on iOS 26.1 and later.