The iPhone Clock App Has An Oddity Not Many People Know About

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There’s a limit to how far your alarm settings will scroll, and most people never reach it.

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The iPhone Clock app has been around since the original iPhone launched 19 years ago, and for most, it's always been a fairly straightforward default app. However, there's a small curiosity hiding within the alarm settings that went viral in mid-2025, along with another quirk we'll talk about below. 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. Go ahead, give it a try and see for yourself.

Open the Clock app, select Alarms, tap the + button and start scrolling through the hours and minutes until you reach the end. It will take several swipes,...

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