"Normally, the icon on the home screen shows the second hand smoothly gliding around the clock face. However, when an iPhone is in Low Power Mode, the second hand begins ticking around the clock instead. 'Wait... the Clock icon on iOS ticks like quartz watch in low power mode and mechanical in normal mode???' said @ShishirShelke1. 'That's ridiculous attention to detail.' His discovery has amazed iPhone users, although many pointed out that this probably wasn't a design decision by Apple."
"'When the battery level gets low, Low Power Mode reduces background activity on iPhone and iPad devices to extend battery life,' Apple explained. When you turn it on, Low Power Mode affects several features. Email fetch, background app refresh, and automatic downloads will be turned off, while iCloud Photos will be temporarily paused. In addition, your display brightness is reduced, while your display refresh rate will be limited. This reduced refresh rate is likely to thank for the change to the clock app icon."
The Clock app icon shows a smoothly sweeping second hand in normal mode, but the second hand ticks when Low Power Mode is enabled. Low Power Mode reduces background activity and limits display performance to extend battery life. Email fetch, background app refresh, automatic downloads, and iCloud Photos sync can be disabled or paused when Low Power Mode is on. Display brightness is reduced and the screen refresh rate can be limited, with always-on displays dropping to about 1Hz. The reduced refresh rate makes the second hand appear to tick rather than sweep, which reduces frame processing and conserves battery. The ticking behavior reflects a power-saving trade-off rather than a purely aesthetic choice.
Read at Mail Online
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