iOS 12.2, iOS 11.4.1, iOS 10.3.3and iOS beta 12.3 1 appear today in a very interesting comparison, which shows us what kind of autonomy they offer for the battery. All iPhone 6S phones have new batteries, so the test should show as clearly as possible what kind of autonomy they offer on these versions of the iOS operating system at the moment.
The first part of the test aimed at checking the battery autonomy using the Geekbench application, and iOS 10.3.3 obtained an autonomy of 5 hours and 40 minutes, the longest of all. iOS 12.2 came in 2nd place with 3 hours and 28 minutes, iOS 11.4.1 in 3rd place with 3 hours and 23 minutes, while iOS 12.3 beta 1 came in last place, with an autonomy of 3 hours and 19 minutes.
In a second test made by running video clips from YouTube, the results did not change in any way, so that iOS 10.3.3 offers the best battery autonomy. To be honest, the battery life of the iPhone 6S dropped extremely much from iOS 10.3.3 to iOS 11.4.1, the difference being 2 hours and 17 minutes, absolutely huge.
Yes, iOS 11 comes with new functions from Apple, but it seems that they damage the battery autonomy a lot, and iOS 12 brought absolutely nothing notable, for the better, from this point of view.
