updated 08:00 pm EST, Wed January 22, 2014
Appears to affect machines when battery is low
Apple has acknowledged a problem with iOS 7 that can cause devices to randomly crash and reboot, an issue most commonly seen when power levels on the device dip below 30 percent. While the company had not previously acknowledged the issue, it confirmed on Wednesday that it is working on a fix that will appear in an upcoming software update. The problem is not currently believed to affect all users.
A MacNN editor, by coincidence, noticed the problem for the first time on Tuesday while working on an iPad with a tethered Wi-Fi connection. The application crashes, sending the user back to a home screen very briefly before fading to a black or white "soft reboot" screen (depending on the color of the iOS device) and then the familiar Apple logo indicating a restart. As with other reports, the machine was in the 30 percent battery range when the incident occurred. The only app in use at the time was a word processing program that included cloud syncing services.
A thread in the Apple Support Communities forum, somewhat inaccurately titled "iPhone 5 with iOS 7 randomly shuts off" has some 243 replies and 89,000-plus views, suggesting the issue is widespread but may not be universal. One user said he resolved the problem by completely resetting and restoring his device; another simply swapped the unit for a new one at an Apple Store. Some report that the issue happens frequently, which others have not seen it repeated after the first incident.
Apple may opt to issue a special software update to fix the problem, but it is known to be working on an iOS 7.1 update that addresses numerous other smaller problems, reports AppleInsider. The update is currently on its fourth beta, and likely to be released in the near future.