
It is hard to imagine anyone with an iPhone 12 Pro Max or an iPhone 13 Pro Max complaining about battery life. Heck, even the iPhone 11 Pro Max will get you through at least a full day on a single charge. But according to some Twitter subscribers posting on the platform, some iPhone users are noticing a drop off in their battery life since the release of iOS 16.
iPhone users note a decline in battery life since installing iOS 16

The iPhone 14 Plus will have the best battery life in iPhone history
He adds, “I just check a news site and mail in my break and a few minutes of Instagram. But not more than half an hour to an hour MAX. Work is work no time for phones while working. If it was just a 5% difference it would be okay but it’s almost 20% while there is no extra use than normal.”
Buy the Apple iPhone 14 Pro and iPhone 14 Pro Max
Another Reddit user says, Comfortable-Key-71 says, “Battery on 13 pro max drains like crazy. It went from 11-12hrs SOT to just 7hrs and it lags like hell when I do FaceTime or PiP, it just lags in general. I do know it takes a few days for the phone to be normal again but it’s already been almost a week. I’m contemplating on going back to 15.7 but I might need some opinions first.”
The iOS 16.0.2 update did not exterminate any bug that would affect the battery on iPhone 13 models and older
Now to be fair, a small drop in battery life is expected when first updating to a new OS build as the phone is doing stuff in the background to make sure that it will work smoothly with the new OS build. And this is even more the case following a major update such as the one that was dropped with iOS 16. However, it has been almost two weeks and any adjustments made in the background should be completed.
You might note that the iOS 16.0.2 update did not include any fix for the battery on any iPhone models. But if this issue continues, we won’t be able to blame this on the update to iOS 16 and we might see the pressure on Apple to fix whatever is causing the battery drain on the iPhone. We will keep our ears to the ground and if we hear anything about an update to fix the battery we will let you know and will update this story.