When Apple releases new iPhones and new operating system updates, there are often complaints about how long the battery lasts. Apple made improvements to battery life across the iPhone 16 lineup, and while these iPhones last longer than ever, some people are still seeing battery issues.
You'll need to balance battery drain with the feature set you want enabled, turning things on and off when you need to ensure your battery lasts all day. Not all of these tips are specific to iOS 18 and the iPhone 16 models, but they will help you preserve battery whether you have an iPhone 16 or an older device.
iPhone Mirroring allows you to control your iPhone from your Mac, and get your iPhone notifications on your Mac's display. Since it's on Mac, it seems like it shouldn't be using iPhone battery, but there is a connection there to relay notifications. Notifications still show up when the iPhone Mirroring app is closed on the Mac, so that constant connection might impact battery.
To disable it, go to Settings > General > AirPlay and Continuity and tap on Edit. From there, delete the Macs that your iPhone connects to. You can also swipe to delete a Mac from the list.
In iOS 18, Apple made it so you can place app icons and widgets anywhere on the iPhone's hidden grid, so you might be using widgets more often than before. If that's the case, it's worth noting that widgets can have an impact on battery life.
Lower levels of brightness in Light Mode use the same battery as higher levels of brightness in Dark Mode, which explains why Dark Mode can save battery even when screen brightness is turned up. When your screen brightness is lower, such as when you're in a dim room, swapping to Dark Mode doesn't save as much battery life, but it still draws a little less power.
In iOS 18, you can set a Dark option for your icons that turns them darker when Dark Mode is enabled (or all the time, if you prefer). Dark icons are easier on the eyes when Dark Mode is on, and it might save just a little extra battery life.
iOS 18 has a customizable Control Center where you can use the Controls Gallery to choose your controls, including third-party controls. You can change the size of Control Center toggles, and use multiple pages.
Home app controls also need to update whenever the Control Center updates, and these controls that refresh might drain some battery.
Customize Control Center by long pressing on the display and tapping the "-" button by any controls you want to remove.
In iOS 18, you can finally swap out or remove the Camera and Flashlight buttons on the iPhone. If you've ever accidentally activated one of those buttons while your iPhone's in your pocket, you know that leaving on the Flashlight or the Camera for an extended period can definitely impact battery life.
If you have an iPhone 16 Pro or another "Pro" iPhone that supports a 120Hz ProMotion refresh rate, turning it down to 60Hz might extend your battery life. Since Low Power Mode limits the display refresh rate to 60Hz, it's definitely a measure that works to preserve battery.
Live Activities let apps keep an ongoing notification on the Lock Screen or Dynamic Island. Combined with the Always-On display of the iPhone 14 Pro, 15 Pro, and 16 Pro, Live Activities can drain your battery.
Focus modes let you choose which apps and people can send you notifications and when, so during work hours you can make sure you're only getting work notifications, and during personal time, you can limit your work notifications. Focus filters even let you filter out select emails, messages, calendars, and more.
With Apple Intelligence, Apple is adding a new "Reduce Interruptions" Focus Mode that can intelligently filter out what's not important, while still delivering what you need to see immediately. Toggling this on removes all of the hassle of setting up a Focus mode, but it has all of the benefit.
You can also use the "Intelligent Breakthrough and Silencing" toggle with every Focus mode you make to get the same effect, so you'll never miss something important. Apple Intelligence is coming in iOS 18.1, set to be released in late October.
You'll still get all of your notifications when a Focus mode ends, but all in one alert rather than multiple. Turning off unwanted notifications from apps a great method for saving battery life, and Focus modes are useful for reducing incoming notifications without missing things.
You can find all of the Focus features in the Focus section of the Settings app.
Along with Focus modes, you should also make sure that any app that sends non-important notifications is relegated to the Scheduled Summary, which saves up notifications and sends them to you once or twice a day.
AirTags can be managed by opening up Find My and navigating to the items tab.
With the iPhone 15 and iPhone 16 models, you can preserve your battery health with an optimized charging feature that prevents charging up past 80 percent. We tested the 80 percent charging limit over the course of a year, and while it makes a little bit of a difference, it's not a huge help keeping your maximum battery up over time.
It's not worth turning on if you need full battery for a long day out, but it's possibly worth turning on if you're often using your iPhone at home. There are also settings for limiting your charge to 85, 90, or 95 percent. Anything under 100 percent could have an impact on longterm battery health over several years.
To turn on a charging limit, go to Settings > Battery > Charging and select a limit using the slider.
Starting with iOS 18.1, Apple is rolling out the first Apple Intelligence features. It will kick off with Writing Tools and a new Siri design, but later this year, we'll also get image generation capabilities and ChatGPT integration.
There have been a lot of recent complaints about battery drain caused by iOS 18, particularly from iPhone 16 users, so it is entirely possible that there is an underlying bug that will be addressed in a future update.
There are a lot of minor changes to make to cut down on battery use, but everything you do on your iPhone is going to drain battery. It's important to figure out what works for you, what features you don't need, and where you can compromise to get the most out of your battery.
Do you have a useful battery saving tip that we haven't shared? Let us know in the comments below.
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