iOS 16 Causing Battery Drain? Three Possible Reasons Why and How to Fix

If you updated to iOS 16 this week, you might notice your iPhone's battery draining faster than you remember before you got Apple's latest update.

iPhone 13 Battery Tips Thumb
While you may be quick to point a finger at the update itself as the culprit, there are several reasons why you may notice your battery draining a bit faster in the days after the update. We've listed some reasons below and how you can address them.

iOS 16 Photos App

iOS 16 Photos and Camera Guide Feature
The Photos app on your ‌iPhone‌ applies advanced machine learning and image-recognition algorithms to your photos and videos. The ‌Photos‌ app uses the A-series chips in the ‌iPhone‌ to run these complex operations and consumes battery life.

On ‌iOS 16‌, specifically, a new feature automatically surfaces duplicate photos in your photo library. This new feature uses on-device processing to go through the thousands of pictures on your device and identify possible duplicates, and this process can be time and battery-consuming.

The more photos and videos you have, the longer it will take for the categorization process to complete. As Apple suggests, the best course of action is to leave your ‌iPhone‌ plugged in overnight while connected to Wi-Fi. This will allow the ‌‌Photos‌‌ app to curate your photos and videos while on connected power, which should alleviate some strain on the battery. The process can take several days, if not weeks, depending on how big your library is.

Spotlight Search Indexing

ios 15 spotlight photos search
Spotlight search on your ‌iPhone‌ is a powerful way not only to search for apps and contacts, but it's also a place where you can search for content within apps, such as emails, messages, maps, ‌Photos‌, and more.

To provide search results for content within your apps, your ‌iPhone‌ needs to index all of the content within all your apps using on-device processing, which consumes battery life. This can be a long and non-trackable process that happens in the background as you use and charge your ‌iPhone‌.

While there is no way to track the process, you may be able to make it easier. Within Settings -> Siri & Search, you can disable the ability for Spotlight to search within individual apps. If there's an app that perhaps you don't want to be indexed, you can disable "Show Content in Search" to stop your ‌iPhone‌ from indexing that app, which could help save some battery life.

Your Apps Need to Be Updated

App Store Icons
Apps are essential to the ‌‌iPhone‌‌, but automatic updates to apps you have installed can have an impact on battery life. Especially after a major update like ‌iOS 16‌, apps still need to get updated to support new technologies and the latest operating system.

In the coming days and weeks, developers will slowly update their apps to support ‌iOS 16‌ and its new features. Apps that are outdated and that have not been updated for new technologies in ‌iOS 16‌ may cause some battery drain since they're possibly using older tools and code.

A Good Old Restart and Checking on Battery Health

battery life ios 16
It's always worth simply restarting your ‌iPhone‌. Sometimes after a major update, your ‌iPhone‌ could be glitched and bugged out, and a simple restart could resolve it and bring your battery life back to normal.

Another thing to remember is that the ‌iPhone‌'s battery, like all lithium-ion batteries, loses capacity over time. On Your ‌iPhone‌, open Settings and tap through to Battery -> Battery Health, where you'll see how much of your original ‌iPhone‌'s battery capacity you have left. iOS will warn you if your battery needs to be replaced, so it's another point to keep in mind when thinking about your ‌iPhone‌'s battery life.

Related Roundups: iOS 16, iPadOS 16
Related Forum: iOS 16

Related Stories

ios 16 lock screen feature

Some iOS 16 Users Complain About Slow Spotlight Search and Battery Drain

Wednesday September 21, 2022 4:25 am PDT by
It's been nine days since Apple released iOS 16 to the public, bringing major changes to the Lock Screen, Messages, Maps, and more. In the days following the release, some users have encountered several issues on their iPhones, ranging from slow system performance to battery drain. In the past few days, iPhone 14 Pro users have shared specific bugs related to Apple's latest high-end iPhones, ...
iOS 15

Apple Responds to User Complaints of Battery Drain After iOS 15.4 Update

Thursday March 24, 2022 6:07 am PDT by
Users are reporting excessive battery drain after updating to Apple's latest iOS 15.4 update, claiming that their iPhones are no longer lasting as long as they used to before downloading and installing the newest iOS version. Users have taken to Twitter to voice their poor battery life experience on iOS 15.4, tagging the Apple Support account in hopes of finding a solution. "What's wrong...
ios 16 battery percentage icon on mac

Batteries App Brings iOS 16's New Battery Percentage Icon to the Mac

Thursday August 11, 2022 7:19 am PDT by
Just a few days after Apple reintroduced a battery percentage icon on the latest iPhones, developer Rony Fadel has updated his popular Batteries app with a new option to enable a similar looking battery percentage icon in the Mac's menu bar. As on the iPhone, the battery percentage appears inside the battery icon on the Mac for a consistent appearance across iOS and macOS. The existing...
ios 16 beta 5 battery percent

iOS 16 Beta 5: Battery Percentage Now Displayed in iPhone Status Bar

Monday August 8, 2022 10:43 am PDT by
With the fifth beta of iOS 16, Apple has updated the battery icon on iPhones with Face ID to display the specific battery percentage rather than just a visual representation of battery level. The new battery indicator is available on iPhone 12 and iPhone 13 models, with the exception of the 5.4-inch iPhone 12/13 mini. It is also available on the iPhone 11 Pro and Pro Max, XS and XS Max, and...
battery percentage ios 16

Here's Why the iPhone Battery Status Icon in iOS 16 Is So Controversial

Wednesday August 10, 2022 4:34 am PDT by
In the latest iOS 16 beta, Apple has updated the status bar battery icon on iPhones with Face ID to display the exact percentage remaining rather than just a visual representation of battery level, and while the change has been largely welcomed, some users are unhappy with the way it has been implemented. In iOS 15 and earlier, battery percent has not been present on iPhones that have...
ios 16 beta battery percentage icon

Apple Confirms iOS 16 Battery Percentage Display Not Available on Certain iPhone Models

Tuesday September 13, 2022 1:00 am PDT by
Following iOS 16's public release, Apple has confirmed that users of older generation iPhone models will miss out on the ability to show their iPhone's battery percentage directly in the status bar. In an updated support document, Apple says that the new battery percentage display is not available on the iPhone XR, iPhone 11, the iPhone 12 mini, and the iPhone 13 mini. Apple provides no...
ios 16 1 beta 2 battery

Latest iOS 16.1 Beta Tweaks Battery Status Bar to Show Visual Charge Level

Tuesday September 20, 2022 10:53 am PDT by
Apple today released the second beta of iOS 16.1, introducing further tweaks to the battery percentage indicator that is located in the status bar. With today's beta, the battery level of the icon depletes as the battery depletes, providing a better visual indication of what battery level is at alongside the percentage. If the percentage feature is enabled, you will now see the charge...
ifixit iphone 13 teardowns

Samsung Battery Technology Adapted From EVs Could Boost iPhone Battery Life

Wednesday April 20, 2022 5:39 am PDT by
Samsung is planning to use a battery production technique normally used for electric vehicles to create more energy-dense smartphone batteries, in a move that could improve the battery life of future iPhone models, The Elec reports. Image via iFixit Samsung SDI, Samsung's battery and energy division, intends to use a production technique it currently uses to make fifth-generation batteries...

Popular Stories

USB C Over Lightning Feature

EU Passes Law to Switch iPhone to USB-C by End of 2024

Tuesday October 4, 2022 3:30 am PDT by
The European Parliament today voted overwhelmingly in favor of enforcing USB-C as a common charging port across a wide range of consumer electronic devices, including the iPhone and AirPods, by the end of 2024. The proposal, known as a directive, forces all consumer electronics manufacturers who sell their products in Europe to ensure that a wide range of devices feature a USB-C port. This...
General iOS 16 Feature Yellow

10 New iOS 16 Features Coming Later This Year

Monday October 3, 2022 2:41 pm PDT by
iOS 16 was released to the public three weeks ago with a customizable Lock Screen, the ability to edit iMessages, improvements to Focus modes, and much more. And in the coming months, iPhone and iPad users have even more new features to look forward to. We've rounded up 10 new features coming to the iPhone and iPad later this year, according to Apple. Many of the features are part of iOS...
ipad pro m1 feature

Gurman: Apple Event This October Remains Unlikely, No Touch ID for iPhone 15

Sunday October 2, 2022 6:41 am PDT by
Apple is developing new iPad Pro, Mac, and Apple TV models, and at least some of these products will be released in October, according to Bloomberg's Mark Gurman. However, Gurman continues to believe that Apple is unlikely to hold an event this month. In the latest edition of his Power On newsletter, Gurman said "the big iPhone 14 unveiling last month was probably it for Apple in 2022 in...
iOS 16

Apple Preparing iOS 16.0.3 With More Bug Fixes Following iPhone 14 Launch

Monday October 3, 2022 7:53 am PDT by
iOS 16.0.2 was released last month with several bug fixes for iPhone 14 issues, excessive copy and paste permission prompts, and more. Now, evidence suggests that Apple is planning to release iOS 16.0.3 with additional bug fixes. Evidence of an upcoming iOS 16.0.3 software update has shown up in MacRumors analytics logs, which have been a reliable indicator in the past. There are several...
Apple SIM Card

Apple SIM No Longer Available for Activating New Cellular Data Plans on iPads

Sunday October 2, 2022 8:04 am PDT by
As of October 1, Apple SIM is no longer available for activating new cellular data plans on supported iPad models, according to an Apple support document. Introduced in 2014, the Apple SIM was designed to allow iPad users to activate cellular data plans from multiple carriers around the world. Initially, the Apple SIM was a physical nano-SIM card, but it was embedded inside later iPad Pro...
maxresdefault

Video: AirPods Pro 2 vs. Bose QuietComfort II

Monday October 3, 2022 12:50 pm PDT by
Apple on September 23 officially launched the second-generation version of the AirPods Pro, introducing updated Active Noise Cancellation, Adaptive Transparency, improved sound, and more. Right around the same time, Bose introduced new QuietComfort II earbuds with many similar features, so we thought we'd compare the two to see which has the edge. Subscribe to the MacRumors YouTube channel for ...
General YouTube Feature 1

You May Soon Need to Be a YouTube Premium Subscriber to Watch 4K Videos

Monday October 3, 2022 4:29 am PDT by
YouTube may make watching videos in 4K quality on the platform exclusive to only YouTube Premium subscribers, according to screenshots posted by users on Twitter and Reddit. On Reddit (1,2) and Twitter, some users have started to recently notice that on iOS, and presumably across other platforms also, YouTube is now saying that in order to watch videos in 4K, the user must be a paying...
dynamic island alan dye

Apple Executives Talk About iPhone 14 Pro's Dynamic Island in New Interview

Sunday October 2, 2022 10:48 am PDT by
In a new interview, Apple's senior vice president of software engineering, Craig Federighi, and Apple's vice president of human interface design, Alan Dye, sat down to discuss the thinking behind the iPhone 14 Pro's Dynamic Island and how it was developed. During the interview with the Japanese magazine Axis, Federighi, who oversees the development of iOS, said Dynamic Island represents the...