# iPhone Clock app has a hidden limit at 4:39

> The iPhone Clock app's alarm scroll stops at 4:39, a quirk that went viral in mid-2025 and remains unexplained by Apple.
- Title: iPhone Clock app has a hidden limit at 4:39 · Engadget
- Summary: The iPhone Clock app's alarm scroll stops at 4:39, a quirk that went viral in mid-2025 and remains unexplained by Apple. The iPhone Clock app's alarm…
- Keywords: iphone, clock app, alarm settings, apple, ios, hidden features, technology, Clock, app, hidden, limit, Engadget
- Source: Engadget — https://engadget.com/2281209/iphone-clock-app-oddity-time-linear-list
- Author: Thomas Godwin
- Published: 2026-10-11T18:45:00+00:00
- Read time: 1 min
- Topics: iphone, clock app, alarm settings, apple, ios, hidden features, technology
## The Clock app has a secret limit
The iPhone Clock app's alarm hour and minute scrolls appear infinite but stop at 4:39, or 16:39 in military time. Most people never notice because reaching it requires rapid scrolling.
## The oddity went viral in mid-2025
This small curiosity hiding within the alarm settings went viral in mid-two thousand twenty-five. The specific endpoint at four thirty-nine seems random and unexplained.
## Apple hasn't explained the limit
Apple has not weighed in on why the alarm stops at 4:39. Online discussions offer differing explanations, including something called Tableview, but the numbers don't add up to anything obvious.
## The Clock icon tells the time
The Clock app icon is not static.It tells the current time with a moving second hand, a feature Apple introduced in iOS 7.Users who open the app to check the time never needed to.
## Low Power Mode changes the second hand
On iOS 26.1 devices and later, Low Power Mode changes the second hand motion from continuous sweeping to a once-per-second tick, like a traditional quartz clock.This is only a visual change with no audible ticking.
## Stopwatch has a hidden feature
Open Stopwatch inside the iPhone Clock app and swipe across the display to switch between digital and analog stopwatch faces without installing another app. This is a documented feature in the iPhone user guide.
## StandBy mode displays clock options
Connect your iPhone to a charger and stand it on its side to enter StandBy mode, which displays widgets, photos or a clock.
## Key takeaway

The iPhone Clock app's alarm settings scroll stops at 4:39 (or 16:39 in military time), a hidden limit most users never discover because it requires rapid scrolling to reach.