Across social networks and tech forums, iPhone users are passing along reports that their devices randomly reboot during the night after upgrading to iOS 17. The matter has been traced by 9to5Mac reporters who later confirmed similar behavior on their own phones.
Following numerous online posts, 9to5Mac independently tested an iPhone and found that the device indeed restarted overnight. In some accounts the reboot stretched over several hours, adding to user frustration.
At this stage, the exact trigger remains unknown. One theory suggests the reboot could be a battery management tactic, though there is no official statement from Apple. What is clear is that the unusual reboot pattern appears exclusively on devices running iOS 17.0.3.
While the problem is not dangerous, it creates inconveniences such as the risk of missing calls and the need to re-enter the passcode after the phone comes back on. Notably, Face ID may not work the first time the screen is unlocked following a restart.
Users can check if their iPhone restarts overnight by going to the Battery section and selecting the Last 24 Hours chart to see a summary of recent power events.
Earlier this year, Insider published early looks at the redesigned iPhone 16 Pro, highlighting the ongoing evolution of the device line and software features that accompany new hardware releases. The current iOS behavior under discussion adds another dimension to the ongoing conversation about how software updates impact device reliability and user experience.
As conversations continue, Apple’s official guidance remains awaited. In the meantime, users who notice nightly reboots can monitor the battery chart, ensure backups are up to date, and consider updating to any newer firmware once it becomes available to address potential stability issues. Attribution: reports compiled from 9to5Mac and Insider coverage discussing iOS 17.0.3 observations and related design previews.