Apple recently released their new iOS 12..3 software update, we have already seen some speed test videos for the OS and now we have some iOS 12.1.3 battery life tests.
In the video below the battery life is tests on the iPhone 5S, iPhone 6, iPhone 6S, iPhone 7 and iPhone 8, it is first tests on the older iOS 12.1.2 and then tests on the iOS 12.1.3 update. It will be interesting to see if there is any battery life improvement with the new software.
As we can see from the video there does seem to be some small battery life improvements on the majority of devices.
The iPhone 5S went up from 2 hours and 17 minutes to 2 hours and 18 minutes, the iPhone 6 from 2 hours and 7 minutes to 2 hours and 9 minutes. The iPhone 6S battery life increased by around four minutes and the iPhone 7 by around 7 minutes. The only device where the battery life went down was the iPhone 8, this went down by around two minutes.