There is no such a thing as a perfect software update. While updates aim to bring improvements in performance, along with better security, bug fixes and new features, sometimes they bring more issues. That is exactly the thing with iOS 10.1.1 update.
If you go to Apple Official Support Communities website, you will see it is flooded with posts about iOS 10.1.1 update battery issues. Quite a few users reported the same problem saying the battery is reducing drastically, and it drains in minutes once it reaches 30%.
One of the users, RogerW-uk said: Has anyone got the news of when the iOS 10.1.1 battery **** up is going to get fixed. Powers down with 30% plus left on. Drains irrationally. Or is it Apples new way of forcing us to upgrade?”
The interesting thing is that for most users the battery drastically drops when it reaches 30% and goes to 1% when the phone shuts off. When users connect the phone to the charger, it again shows 30%. Some people experienced the same issue after they upgraded to iOS 10.1. They expected the fix for the bug will come with iOS 10.1.1 but it didn’t happen.
iPhone battery life issues are the main topic these days. A few days ago, Apple announced iPhone 6s battery replacement program. On its official website, the company said: “Apple has determined that a very small number of iPhone 6s devices may unexpectedly shut down. This is not a safety issue and only affects devices within a limited serial number range that were manufactured between September and October 2015.”
Battery issue after iOS 10.1.1 update is not limited to a specific iPhone model. Many people who were completely satisfied with the battery life on their iPhones started complaining about it right after iOS 10.1.1.
The usual fixes for iPhone battery issues can’t solve the issue as it lies in the software. So, users will have to wait for Apple to address the problem with iOS 10.2 or 10.2.1 that will bring the bug fix.