Even though iOS 10.2.1 was released last month, only now is Apple revealing that the update included a bug fix for certain models of the iPhone 6, iPhone 6 Plus, iPhone 6s and iPhone 6s Plus. Apparently, some of these iPhone models were abruptly shutting down after being given a task that required heavy duty processing power. Those units containing an older battery were more likely to shutdown after trying in vain to handle what was asked of it.
The update didn’t completely exterminate the bugs, but Apple claims that with the release it has seen a decline in the number of iPhone 6s shutdowns by 80%. The update has lowered the number of shutdowns on iPhone 6 models by 70%. These sizeable reductions have taken place after iOS 10.2.1 has been installed on over 50% of the units that received the update.
Besides including a power management patch, iOS 10.2.1 also includes a new feature that allows those whose iPhone shutdowns suddenly due to an older battery, to instantly reboot by simply pressing the power button. Previously, an affected phone would have to be connected to a power adapter in order to reboot. This issue apparently has nothing to do with the battery problem found on some other Apple iPhone 6s units. Apple is replacing the battery on these specific units for free since they have a habit of shutting down even with 30% of life remaining on them. When these batteries were manufactured, they were exposed to too much ambient air which is believed to be the cause of the problem.
“With iOS 10.2.1, Apple made improvements to reduce occurrences of unexpected shutdowns that a small number of users were experiencing with their iPhone. iOS 10.2.1 already has over 50% of active iOS devices upgraded and the diagnostic data we’ve received from upgraders shows that for this small percentage of users experiencing the issue, we’re seeing a more than 80% reduction in iPhone 6s and over 70% reduction on iPhone 6 of devices unexpectedly shutting down.
We also added the ability for the phone to restart without needing to connect to power, if a user still encounters an unexpected shutdown. It is important to note that these unexpected shutdowns are not a safety issue, but we understand it can be an inconvenience and wanted to fix the issue as quickly as possible. If a customer has any issues with their device they can contact AppleCare.”-Apple