Your iPhone 15 Can Show the Time When It's Out of Battery in iOS 18
How does the improved Power Reserve feature function when the battery is exhausted on an iPhone running iOS 18?
The improved Power Reserve feature in iOS 18 allows an iPhone to continue showing the time in the upper left corner of the device even when the battery is exhausted. This is a small but useful upgrade from the previous version. In addition to displaying the time, the battery icon still appears, and the "iPhone is Findable" message will be shown while reserve battery life remains. This feature is currently limited to iPhone 15 models.
Is the new Power Reserve feature that displays the time on the screen exclusive to the iPhone 15 models, or is it available on older versions like the iPhone 14 Pro Max?
The new Power Reserve feature that displays the time on the screen is exclusive to the iPhone 15 models. It appears that this feature is limited to the iPhone 15 models. We tested on an iPhone 14 Pro Max and were not able to get the time to show up, but it did work as expected with an iPhone 15 Pro Max1. Power Reserve has been a feature on iPhones dating back to the iPhone XR and iPhone XS, so it's not clear what the limiting factor is in terms of showing the time on display when the battery has drained on older devices1.
What enhancements has Apple made to the Power Reserve function in iOS 18 specifically for the iPhone 15 models?
Apple has made some enhancements to the Power Reserve function in iOS 18 specifically for the iPhone 15 models. Now, when the battery on an iPhone running iOS 18 is exhausted, the phone can continue to show the time in the upper left corner of the device. This is a small but useful upgrade. The battery icon still shows up, and you'll see "iPhone is Findable" while reserve battery is left.