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Your iPhone 15 Can Show the Time When It's Out of Battery in iOS 18
The iPhone has had a Power Reserve function that holds back a small amount of battery life to allow features like Find My and NFC unlocking to work...
As demonstrated on Reddit, 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, which is a small but useful upgrade. 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 devices. Apple today previewed iOS 18, the next major update to the operating system for the iPhone, with new customization features, a redesigned Photos app, and more.
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