Apple says that the random shutdown issue plaguing some iPhone 6s models may be more widespread than first believed.
The company originally said it affected a small number of devices manufactured between September and October 2015. Apple is now saying that the issue is more wide spread than originally expected and that an iOS update is on the way.
In a support document that isn’t published in English yet, Apple says that it needs more diagnostic data to figure out the cause of the issue. It says that a software fix may be a possibility for devices that were outside of the original batch.
Outside the affected batch, a small number of customers reported an unexpected shutdown. Some of these shutdowns may be normal, because the iPhone will shut down to protect its electronic components. To gather more information, we will add an additional diagnostic feature to the iOS software update that is released next week. This feature collects a variety of information in the coming weeks that may help us improve algorithms for managing battery performance and shutdown operations. If such improvements can be achieved, we will deliver them through further software updates.
Late last month Apple launched a free repair program for devices with certain serial numbers, but it now appears that devices outside of the initial batch are being affected.